I don't think paper money will be banned or replaced completely, Even in the current time where debitcards and creditcards are used worldwide still paper money has a significant use particularly in physical transactions, I think it would still maintain presence even if bitcoin or other internet-based methods go mainstream.

These usually take the fee and subtract it from the transaction value at least blockchain.info does that, If a wallet doesn't then I think it's suspicious even in itself, Since they all pay fees to the network to complete the transaction and are supposedly not using your funds in some investments or projects.

I'm using two PC wallets and one web wallet, Electrum and Multibit are my PC wallets, They are easy to use, Fast and convenient to send transactions through, My web wallet is blockchain.info and I see it as one of the relatively trustworthy web wallets although I don't suggest putting allot of money even in blockchain.info.

I started in a little different way than faucets, it was around 2012 and coinbase was just launched and they were giving 0.1 BTC for new members "was worth a little more than a dollar at the time", After that it was fun to learn about bitcoin and it's system... Did not invest in it though...

The best thing you could do to stay away from gambling is controlling your access to money and try to limit it as much as possible, Keep your coins in a secure, far paper wallet, Avoid thinking about it and come with new hobbies that will take your attention from gambling.

There is no such thing as a "best" strategy in Roulette, Roulette is completely random and does not provide any strategy or skill based component and merely a luck based game, it might be profitable for some with their lucky color/number but that's not a strategy at all.

There are multiple popular according to their category, Primedice and Justdice are popular of the dice sites, Fortunejack is a popular casino. Nitrogensports, Directbet are some of the popular sportbooks.

You can go to the "Currency Exchange" section and post a new topic or contact one of the traders here,
https://bitcointalk.org/index.php?board=53.0
You can also go to localbitcoins and post a new trade or contact someone with an open offer.

Just holding them would be the best investment IMO, there are no safe or good bitcoin investments now and keeping them and waiting for the price to improve would be best IMO.

It would depend on the security of the method the private key was generated by, If it's generated by an offline armory wallet for example in a PC that was never connected to the internet would be safer than a blockchain private key.
I think I would keep the TXT file in multiple flashes and hold them in multiple vaults.

Bitcoin in general would be fine without altcoins, bitcoin already was running when there were no altcoins and bitcoin is the base and origin of cryptocurrencies, I don't think it will be the same-way around though, I doubt altcoins could sustain without bitcoin that it can be bought and sold for.

Loans are too risky because of multiple reasons, People mostly take loans to invest in bad projects like gambling and trading altcoins etc... which rarely yield profit therefore not giving back the loans after losing the loan amount, Also there is no stable collateral in the online field generally so no motive for the lender to payback.

Would pick bitcoin over gold IMO, bitcoin is not stable in price but so is gold, The price fallen big compared to few months/years back. bitcoin is also a currency of the shape of the future while gold is a previous form of money prior to fiat and paper money.

I don't myself doing that anytime soon, First you need a big amount of coins to get a stable profit of it therefore need a big "whale" to do so, Also it's not consistent so it's hard to get something like a stable monthly salary of it. it's still a good part-time job and entertainment.

You can't get rich easily or everyone would be rich, Everyone wants to be rich too. You need to work hard and spend effort, be innovative and come in with new ideas and ways to gain bitcoin and make profit over your stash of coins, it's not easy but it might be possible IMO.

I am actively using bitcoins online, I trade with multiple people and make agreements/arrangements as well, I see it as a convenient way to conduct online transactions particularly those user to user ones, Might try it offline too if some place accepts it near to my area.

You can't do that easily and without risk to invested money, If you try gambling then it's a negative profit game overall also trading BTC for USD is too unpredictable and can lead to losses to invested money as much as money but I still see it better than randomly gambling.

There is no easy way to double your bitcoins, anything that offer something as appealing or as close to doubling in general is a scam, Bitcoin is not virtual money but real money and that has value, it's the same as someone offering to double your USD or money..

Calling it a bitcoin debitcard is a wrong way in even referring to it, it's just a debitcard that is linked to your exchanger account and you can withdraw your USD balance to it "or exchange BTC to USD and then send it to the debitcard", a real bitcoin debitcard would be BTC based in my opinion.

That would be probably the relatively slow confirmation time, it's just too annoying when there are spam attacks going and the network and blocks getting full, it's just too frustrating to wait for the 1st confirmation that can take even hours.