You're throwing a lot of social issues that are not related to each other, and the roots for some of them aren't event related to money at all, such as substance abuse. Crypto exist because there's a flaw in the fiat system, which is the lack of decentralization. There might be some side-effects such as an increase of transparency, etc, but it's not a one size fit all solution. Judging from your post, it seems 'safer' means that the number of crime and etc would decrease. I'd say no for that. There's no guarantee. But it will be 'safer' in terms of transactions security & decentralization.
I don't understand why some people are looking at cryptocurrency as some kind of miracle cure for different issues affecting the global society that we are in. No, cryptocurrency is not meant for that. Still, we should still thank this kind of interest with cryptocurrency no matter what. This concern is all about what can happen if more and more people will be adopting cryptocurrency and what if one day the global village is waking up to its massive adoption or use. I am sure that it can be a big game-changer but it does not mean that things as we know them now on other aspects of living aside from money, banking and finance can be changed for the better. We all are dreamers and certainly cryptocurrency can have some good roles to play but expecting too much from something may end up with some disappointments.
Probably, yes. It will help us to have a safer and faster transactions while paying or selling something. Maybe coins or a product, we can use crypto in shopping or eating in some restaurants. It has a lot of benefits and it is less hassle when our country adopts it.
Lesser crimes, holduppers will have nothing to do with the victim because all they will obtain is a gadget. Crypto needs an account for them to access it and that's a good thing about crypto, it is digital.