Well some people wont be able to exchange their porfolio of crypto into fiat as the banks and all financial system will ask where the money camed from,those who exchanged all their coins to fiat and made huge ammount lost a part to the country as fees,they clean the money paying the interest around the financial market.

There are many ways to double your bitcoins like first one in my list would be to gamble, it is the quickest way to make or loose money.
If you want consistent income then I suggest you to buy accounts and start joining signature campaigns.

When I am happy I try to do some studies.

Many countries don't even recognize BTC and which do,  some of them have declared it as an asset and others are still thinking about it. Lol

water

pepsi is my favourite drink, i just can't live without it

I use bitcoins for online shopping mamy a times, so yes it is like real money to me.

Even if you have sold your first batch, there is no significant increase in the network hashing power.

No dependence on banks, anonymity and low transaction fees.