I agree with you, it can destroy a relationship. It's like putting a carrot in front of a rabbit hole. where someone who has gambled usually they will be addicted to gambling and if we give money or lend them money it is the same as giving pleasure to themselves but there is no benefit for us because of the possibility of defeat that will be obtained, also people who are addicted to gambling are also unlikely to return the money that was loaned earlier, because usually people who are addicted to gambling when they have money they will not pay off their debts but will return to gambling in the hope of getting a big win that can pay off all their debts, and that is a stupid principle. because I have experienced it.
So in my opinion, don't try to finance gamblers because it won't work. most likely like that.
In most cases you’re right but there’s always some exception to this since there’s already a skill based gambling that gives skilled gambler advantage on the game. I can provide a little financing to this cases but only money that I can afford to lose since this is like an investment due to the advantage due to skills.
However this will always be a case to case basis depending on the behavior and mental state of the said friend or family even though they have the skills.