Prevent from harming? What are you talking about? Would you like someone to follow you in every step, telling you what you are supposed to do and stopping you from doing dangerous things? Don't drive fast! Don't do extreme sports! Don't buy cryptocurrency! At some point it's fair to ask if we're adults or not? Being of age used to mean that you're able to decide for yourself and don't need mommy and daddy anymore.
If you gamble with money you don't have, you are mentally challenged, and for that reason it's better to have banks cut people off, than no one doing anything to prevent these people from harming themselves.
I don't need anyone to tell me anything because I'm not making stupid mistakes like that. You have to accept that it's not
your money that you are gambling with, but the money these banks are willing to loan you.
Being of age doesn't mean anything when you as person can't think and act like anyone of age.
If you are mentally challenged then maybe you shouldn't be given a CC in the first place? If we aren't segregating people and dividing them into groups with certain money handling abilities based on their IQ, we shouldn't be deciding for them.
They are innocent until proven otherwise, right? So they are also capable of making financial decisions until proven otherwise. They were allowed to have a bank account and wire money in there, right? Nobody cared to check if they are smart enough, but when it comes to withdrawing it's suddenly a big deal, because they might do this or that. I can't believe you're in favor of this.
The banks won't loan you any money if you don't have a steady income. Without it the only CC you will be allowed to have is a prepaid one. If they have income they must be mentally capable of handling some degree of responsibility, would you agree?