He wasn't 'emotionally' ready to become a father.
an 'emotionally' disturbed person
(..) What good is having a girlfriend if you can't unload your psychological sewage on her? That's me, your emotional outhouse. You know, if you ever decide you want to do something about this, I'm-I'm here for you. Thank you. (..)2016 TvShow: The Big Bang Theory Title: The Solder Excursion Diversion Season: 9 Episode 19
(..) I got here as quickly as I could. You're too late. ("Taps" playing) Sheldon, this is silly. You got emotional when that lab monkey died. That lab monkey told me he loved me in sign language. ♪ ♪ ("Taps" ends) (..)2016 TvShow: The Big Bang Theory Title: The Solder Excursion Diversion Season: 9 Episode 19