At what age did you feel you would be an outcast in life?

I felt it as soon as 5 years old when I was most of the time playing alone instead of playing with other kids when I was in kindergarten. My favourite time in kindergarten and early elementary school was when we were playing in the computer lab doing random shit. Everytime we had to be in groups/teams for work or something, I'd always feel like shit and felt the need to get out of the classroom. What about you?