Both sets of my parents were addicts. Mom & Stepdad. (actually lost custody of his son after he put a loaded gun in his then wife's mouth)

Dad & Stepmom quit drugs by the time I was 9/10 but were veryyyyy heavy drinkers. (Stepmom drinks a box of wine daily after work)

Stepdad and bio dad were actually best friends & neighbors when I was younger but my mom & him had an affair, which resulted in a baby (my brother) who my mother passed off as my bio dads son for years. To make it even crazier my stepdad had my mom and his wife pregnant at the same time, and my mom stole her (stepdads current wife) baby name! So technically my stepdad has two kids, about a mth apart, with the same damn name.

My dad and stepmom met at work and began an affair around the same time my mom and stepdad "got together".

I haven't talked to any of these people in over 10+ yrs, and I definitely don't trust them to watch my daughters.