My childhood also sucked, but I'd go back.

My parents weren't monsters, they were flawed people doing what they thought was best... If I could go back and clearly assert myself and my needs? Especially with what I know now?

I'd take that deal.

Not too mention, I'm a programmer. I know every major advancement we've made in the past decades...If I designed a language in the early 00's, I would be worshipped by all programmers. I could've made Uber when the iphone launched, and never took a dime in investments. I'd also jump forward AI tech by a couple decades - I could make the world unrecognizable. I'd be a household name, although I'd probably use a pseudonym