Since many of your replies are referencing my post I would just like to add that I am not 12. I'm closer to 9 (in dog years). I grew up a long time ago, maybe before you were even a sparkle in your parent's eyes and a new name on the family Christmas card.
Happy 50th birthday, or close I guess. I suspected it might be related to age but with so many number accounts nowadays on various platforms it really isn't as strong a personal identifier.
I am that old. I've learned a lot over the years. The most important thing that I have learned is that I'm not alone. I am one of many - unique, like everyone else. In the grand scheme, nothing that I post anywhere is very important. Threads go stale, subject matter becomes obsolete, community knowledge fades as new fads appear, and it's all part of a normal condition. If I completely delete or edit every comment I have ever made under all my former usernames it will only affect a very tiny part of reddit's accumulated content.