God damn it, the more I think about this the more it pisses me off. Feel free to print this out and show Johnny Jackass. It’s a little late now but it’s something I could send to my biological father.
Hi <name> (I don’t feel comfortable calling you ‘Dad’)
Well, it’s been 25 years since you left Mom and me for that woman. I hear you’re now on your third marraige and that you’ve had more kids with wife #3. It’s weird to have half-sibblings I’ll probably never meet. Anyway, it’s kind of funny the way things work out. Mom remarried when I was 4 to a great man, a man who would take a single mom and her snotty little boy as his own. I respected him so much I took his name when I was 18, since legally I couldn’t do it without your consent until then. (Why you ran out but wanted me to keep your name is beyond me.) I owe everything to my Real Dad. You are, at best, a foggy memory, like an uncle I vaguely remember taking me to arcades and theme parks. My Real Dad raised me properly, taught me how to be a man who lives up to his responsibilities and honors his family. I pray that since you’ve started your latest family you’ve finally grown up, but I doubt it. You’ll probably run out on them too, leaving another single mom and her kids to fend for themselves. I only hope they can find someone like my Real Dad and that you’ll finally stop doing this to people. It worked out great for me but each new family you leave might not be so lucky. I hope you find what you’re looking for someday.