There's one holiday that I don't really get into. When I left college and moved into an apartment, I dutifully bought a bag of candy. But there were no trick-or-treaters. I ended up forgetting about the bag of candy for a while, but it was eventually put to good use.
After that, I forgot all about the candy. I couldn't even tell you what day of the week the kids go trick-or-treating. All I know is that if I'm at home, and am worried about kids stopping by, I keep the lights off so they think I'm not home. Yes, I'm a terrible person.
The first time I didn't go out trick-or-treating, I used the time to finish the computer game Might and Magic. That should give you a good idea of how long ago that was.