It would basically take an afternoon for you to come up with one and practice it enough to use it. That's how I got mine as a child. It doesn't have to be cursive, it doesn't even have to be your name, and it's not hard at all to do

I don't care what most people's looks like, but if you're going to have it appear on people's paychecks or official documents seen by the public?

I think in that case, it does reflect on you as a person. It's like showing up to the store in boxers and a stained wife beater... It's legal, and I don't care if you dress strangely or even go naked in your own home, but people should have enough respect for themselves to at least wear athletic shorts in public. Or throw on a bathrobe or something

It's a very very low bar, but if you can't meet even that it's a cause for genuine concern about your well being. Everyone should have some level of dignity as a person