It's no bad decision if borrowing cash both in fiat, in the cryptocurrency sphere and also for gambling,I see nothing bad with such, like I could attest to the fact that I borrowed some amount of money to gamble, strictly football gambling and I wasn't able to pay back in the first two months.
It might work for you, but not for all, at last I got to pay after too many loss.
What I think is demanded is a good mindset, a change of your old mindset, not everyone will want to take this risk, not even the poor nor rich.
A good plan, strategies and taking calculated risks matters.
It is mate. It is bad to borrow money and then use that money in the actual gambling. The OP also talks about gambling but its a different one. Investing in crypto is another form of gambling but it is less riskier especially if done on good set of coins. I say less riskier because cryptos are volatile.
You might be losing today but you never know maybe by the time you woke the next morning your already in profits. This is the good thing in crypto. Gambling is more of a personal hobby or personal interest and its not really that beneficial if we borrow money to feed our personal interest because there is no better returns that we can expect.
That is, loans should not be made for personal interest and gains. But if you borrow money to invest in crypto, i would say, yes its a better idea but not really significant. Because there is no assurance that you will make profits consistently, and no assurance that you can pay your debt in time. As long as volatility matters, crypto will always be unstable. But it does give us a huge income, but not in a frequent basis.