Should I write a letter to my dad after 10 years no contact?

I didnt talk to my dad for about 10 years. My mom was very neglectful as soon and we moved closer to my dad. I seen him every other week. My mom never had food, she was on meth and we would sometimes not have electricity or runnina water. Her husband before that was very abusive. I dont know why I felt separated from mv dad mavbe because 1 iust felt so protective or my mom? I dont know. I stopped seeing my dad around age 15. I dont remember why Anyways I just reconnected with him. He doesnt know about any neglect or anything. Should I write a letter about it or is that weird?