I was a bridesmaid for my sister. That's it. I pulled off a surprise birthday party for mom that turned out very nice. DH has taken me out for some surprise dinners and dates. I didn't have a bachelorrette party and he didn't have a bachelor party. We got married in the town i grew up in and that really wasn't so much of a 'thing" as it is now.
When my kids were little i did have nice birthday parties for them, bowling, renting out the pool at the Y and so forth. Now that they are older, they really don't want that type of thing.
At work, people seem to acknowledge other's birthdays, but mine never seems to come up. It's just the way it is. I used to contribute money to all of their crap, but when my mom died and I didn't even get a card, i am over it.