For example, if you live in France, there is only one bitcoin ATM in one small city, which works 2 hours a day. If you live in that city, then yes, it is good service. 

Miners can keep their BTC and even do not sell them, waiting for BTC price increase.  How large is open market BTC volume - it is very hard to say - as BTC market is not regulated by anyone. 

It is very profitable for gambling site owners - fast profit without any problem.  With martingale you can looose fast and effective, except if you have several hundreds BTC for playing - but even then I think you can loose them fast with martingale. 

I think natural food as much as possible. And especially vegetables + various natural juices from them. This is the best advice, which I know. 

Bitcoin price changes are more or less independent from any altcoin changes, except Litecoin in general. Of course if BTC price will go up twice, it is possible that many altcoin prices also go up. 

You can try with payout - 3, martingale till you win first time, then withdraw. The only problem can be, that profit will be too small, but it is more or less safe way. I do not think, you can have more than 12 red streaks in first bet - it is very rare case then.

BTC have thousands of daily users worldwide, so you can imagine how many years need any of altcoins to reach that level. 

Buying at lower price and selling at higher price.  And checking the BTC market before that. 

News from BTC world and really nice site design.  If site will have visitors, it can survive nowadays. 

Bitcoin need faster confirmation times, this is number first question.  The second question - China mining farms are opening up - so BTC worldwide flow will go up.

Of course, not. ETH price can go down more, who can predict precise altcoin prices. 

It is possible to earn through Forex, like binary options. You just check prices and then make your decision - fast and good ROI

BTC is better, you can control everything. So you can decide either to transfer some BTC or not. It is real freedom. 

No, with time BTC will be with itself. At current stage BTC is relatively new currency, all things start to change, when BTC will be more popular. 

Well, I then play some Dice with 1 BTC starting bet, but I think Dice sites have profit limit, so it is not possible 

Better forget this coin. There are a lot of coins, which are history and nothing more. For example, Pelecoin - try to change it somewhere - it is not possible. 

In fact I can agree, Doge is very popular and transaction times are just some minutes, plus you can always convert Doge to/from BTC 

I do not think that it is safe, any open links to your bank account is not safe - this is very clear 

Bitcoins will be more and more, look at BTC China mining farms. May be someone save a lot of BTC, because wait for price increase. 

Yes, the price of Monero is really low. But the problem is that Monero price can go down more and stay there - because there are limited people group, who use Monero daily and Monero mining can go up