And by the way - I enjoy gambling. And I don't always stop in time. I have NO moral authority over anyone.
But I dislike seeing some uneducated bible- or quran-thumping moralist "pondering" what's right and wrong for other people. He opens a topic about "is it wrong" -- because this is a cheap way to claim moral high ground for a barely-literal whatever he is in a village in some third world hell hole.
It's better for him to ask if it's right that his water supply is full of human feces, or why both his wives should be humiliated and treated like slaves, or who invented that phone or computer he typed that message on (certainly wasn't him -- it was the evil gamblers).
No, he's worried whether it's "wrong" that other people, with lives he can't even dream of or imagine, might be gambling their money.
And my answer to that is, it's none of your business what's right or wrong for others, because you aren't competent to make even basic moral choices if you're asking this question on a Bitcoin gambling forum, and you're not entitled to judge anyone in any event, so learn some humility.