This reminds me of a story:
When I was 19, I went to Italy on a tour with my mother and my brother. The tour included an evening at a restaurant with "half a bottle or wine/person." My brother and I sat at this table "manfully" trying to finish our wine so it didn't go to waste. My parents, while they weren't strict followed the law. I wasn't allowed alcohol at 18 because they law said I had to be 21. But in Italy, of course, the law was different. And let's just say I didn't have a lot of experience with "vino." At the end of the night, as the tour got ready to leave, I was standing up, trying to suck down the last of the wine. And my mother said something very wise - better in the trash, than in your stomach. And she was really right about that. I had enjoyed the wine with dinner. I was done enjoying it. There was no point in putting MORE wine in my stomach, just to not waste it. It really was better off in the trash than in my stomach.
We get to that point with our candy. It's not necessarily on Halloween night, but at some point, I determine that the candy has been enjoyed, is just temptation, ant-trap, stale, causing issues, and it goes out. And I think that this garbage is better off in the trash than hanging around my house. I might bring it to work, but then I have the same problem. It will end up in my stomach. And DH, of all people, does NOT need the tempation.
I could see how if sugar really caused your kid issues - like aggression or hyperactivity that it would be better to just get it all over with in one night and get rid of the candy. Sometimes it's better not to have the temptation around - the power struggles, the fights, the begging, the bargaining.
We get a LOT of kids at our house on halloween. We plan for 10 bags of candy and Dh buys about 2 per week all through October. With something like candy, I don't really care what anyone does with it when it's gone. The joy is in giving it out. Now, if I made someone a handmade gift (knitted or sewn), I might care if it got tossed. But not candy. Our houses are very close together, so we also GET a lot of candy. Our neighborhood is a "destination" neighborhood and kids from other neighborhoods arrive by the carload to ToT here. And DH and I think that is AWESOME.
I have a bigger issue with what to do with crappy strings of beads - like from Mardi Gras parades, pirate parties, pinanatas. And those crappy little toys from the doctors office. We are inundated with them. My next plan is to let DD keep 3 strings of each kind and see if we can purge the remainder.