I like the idea of free regulation, but haven't been able to bring myself to allow it just yet. We are not a "dessert every day" family (NOT because of a philosophical objection, more because it involves having leftovers from a party or a special purchase as I don't keep sweets in the house because of my binging problem), but after Halloween the kids can have 2 pieces of candy in their lunch, two after school, and two after dinner for as long as they request it or until it's gone (they've never run out before just forgetting about it). I try not to make a big deal of it or turn it into a big forbidden fruit OR let my own baggage burden them overmuch (I guess it still does though, since I can't allow free reign, inside of me there's always going to be the worry that one or more of them will have the same problem as me! Which is stupid, but I can't really help it right now.).
I like that they get to enjoy it for a time (we always end up throwing out most of it after they've forgotten about it for a few months). It's not like they won't eat fruit and "good" stuff during that time, and we're fortunate that sugar/fake stuff doesn't affect them very much, so we're pretty lucky.