Too old to trick or treat?

Yes! Finally I'm able to log in. Meaning I'm baaaaaaaaack! so since today was Halloween, I've got a question. When are you too old to trick or treat? This year all I did was go to a costume party and didn't even think about trick or treating. Later, I found out some of my friends, college students, still went. Surprisingly, they still got candy. This then made me wonder if there was an age limit on trick or treating. What do y'all think? All I know is I've decided there isn't and I plan on trick or treating next year! or maybe even as a grandpa with my grandkids. All I know is I want my candy!