Ironic username, given the conversation topic. ;)
While yours may be a true experience: statistics. I'm not sure a personal experience poll on an entrepreneurial technology news site is the best place for a representative sample of people with low willpower. And social psych findings have born out that are a lot of easily manipulated levers to reliably influence people's behavior in an intentional way.
To me, it's not about the people with Fort Knox reserves of willpower. Say instead I'm born into the genetic/epigenetic/life lottery with a crappy ticket, what's fair? (And if you don't agree that that's possible, try volunteering at your local homeless shelter a few times)
Is it fair that everyone else gets to leverage my vices to transfer my wealth and the profits of my work to themselves? Or is there something morally not right about that scenario?
I agree it's easy to go overboard with regulation, but just because it's possible to addict babies to cocaine in utero doesn't mean that's the society we should build.