What makes guys think it is okay to leave their wife and newborn? Its selfish, disrespectful, and irresponsibl

I'm so sorry for all you've had to go through. You and your son are safer as a result of leaving this relationship. Seek counseling for you and put one foot infront of the other and keep stepping. Also, file for child support and move on with your life. We're strong as women, this too shall p.