What do you regret the most in life?

Marry a person who is so useless pcs of s***. No welfare towards my child and me. Mentally tortured and stressed. Living with him is just a miserable things. I dont regret that i have a beautiful child with me. I am living is because of my child. Past is a past. Lesson learned and move on. Its a great opportunity for me to be with this Jerk and Challenges that i have overcome. Its painful for me. But i dont show. Think positive and move on. I just cant wait for Divorce to be over.