Many parks are large enough that you can easily find privacy. Nudity is perfectly legal in most decent cities so dropping acid naked in a secluded part of the park would not be much of an issue.

I didn't address shitty neighbors because I don't have a decent solution. Same with shitty neighbors in SFHs. I could see noise being more of an issue especially if insulation is crap.

I'm not saying apartment living is perfection but I also would not say it sucks. Both apartments/condos and single family homes have their issues.