Yes, and because I like celebrations. I like to remember important dates. Likely as not it's got to do with the socialised habit of commemorating events. We're so used to doing it. Consider how many national holidays there are, and cultural ones too. Not that you need an excuse for a party, but it's nice to have a reason - even if all you do is celebrate it solitarily.
What anniversary is most important to you? Why?
When I was little it was split between my birthday and Christmas, but I don't think that's much different from anyone else when they're young. The birthday meant a day that was all for me, where I got gifts, and people were especially nice, and all that. I don't know what's important now, probably still my birthday, but only because it's about the only anniversary I have to celebrate - I don't have children, and I'm not married, so there's nothing else except my birthday and the birthdays of friends.
How did you family acknowledge anniversaries? Did you adapt any of their traditions as part of your own? Why or why not? How?
The usual cake and gifts and such. My grandmother has finally stopped quasicommemorating the death of my grandfather, and his birthday, and their wedding anniversary, and that's a good thing. I dread the "You know what day it is, don't you" phone call. I don't care much for commemorating deaths, they don't say much about the person who died. I'd rather celebrate life and the living. There are no especial traditions in my family. Somehow I regret that, I regret there being little specialness to most celebrations, little outside the common things done by most folks.
Describe your ideal anniversary celebration.
I'll let you know when and if it ever happens. I am happy with remembrance and good cheer.