I think people who already know about the risk gamble. I think it's not a problem. and keep gambling.

If your purpose of gambling is to kill time and not your resources, then that is great, gambling won't be wrong that way, but if you are killing both your time and your resources, then you have to think again when in gambling site..

Gambling is not wrong but it can be wrong, because of the people that are fast addicted to something do it they will be addicted to gambling for sure, so it depends on how you look at it from different aspects.
Its not wrong for people that just want to enjoy them self for a couple of hours with gambling in their spare time, nothing is wrong with that right ?

People are stupid if they will considered gambling as wrong.

Turn the point to those gamblers and not on the gambling itself.

In common sense I think it's wrong to consider it seriously or use any more money in it more than the money you can afford to lose, Bitcoin itself can be sold for money so it should be considered money.

If you really want to make gambling in right way as entertainment I have one tip for you.
Stop whenever you lost, and stop too whenever you won just collect  it.
Most people do wrong on gamble when they lost, they keep playing because curious that it's should be win until they lost everything.
So stop when you lost, try another day and repeat.

indeed if you think well it is the wrong activities, but have very many people who love the game so it's right or wrong depending on players gambling

Gambling is wrong indeed. It is wrong for the most people. That is because they can control themselves and that is very bad.
People must stop on a time. And must know when it is enough. You dont must be greedy that is very bad.

if you just do gambling for fun, you can play it in a cheap way. of course it won't bring high profit, but you don't seek for profit, just fun, so it means nothing.