However, people still gamble for various reasons.
We can assume that the people who still gamble are not from the religion that prohibits it or if they are they are not very religious. In reality too, almost every religion is averse to gambling, Islam is the only one I know that expressly prohibits any form of riba which will include gambling and also investing in Bitcoin, but Christianity is not welcoming of gambling either or any other religion for that matter.
I do not expect anyone to openly here discuss how they participate in something that is expressly prohibited by their religion.
The main rift between religion and gambling is simple, religion casts their concentration more on the negative aspect of something rather than any assumed positives while making decisions. The man of God would be quick to point out to you the damages and its bad effect on the society before even thinking that its a fun thing if done in moderation.
Gambling is really a personal choice to make and has no strings attached to any religion, especially for me who doesn't agree with every teaching of my church, I feel I still have the right to make good choices for myself that would suite me and at the same time dodn't hurt anyone or myself. That's more like using your head yourself and not allowing the clergy man use it for you.
I've chosen to gamble occasionally, that's my choice and it doesn't stop me from fulfilling my religious obligations too, so its a win win situation.