> From what I have seen, there are no side effects at all.

You haven’t seen enough.

Yeah I know someone who is having real trouble stopping, he can cold-turkey for a few days but always starts up again. I think he has poor impulse control, which maybe GLP-1s could help, as some studies seem to indicate they help with cravings/impulsive behavior generally. I don't know if any MD would prescribe it for that, he's not obese so could not get it on that basis.