some of us prefer to socialize outside of school with kids that actually share our interests rather than being forced to interact with kids that we have nothing in common with.
school comes with bullying, peer pressure and a lot of other negatives in socialization that only the "normal" kids will get through relatively unscathed.
i count myself lucky that i only experienced mild bullying and being an outsider completely eliminated any issues of peer pressure for me as i simply had no need or desire to fit in.
there are plenty of other alternatives where you can socialize. be it boy/girl scouts, music classes, some sports or other activities.
of course, if you didn't get to participate in those either, then you really did miss out. i am sorry for that. your parents failed you at that point. however, if you think that school would have helped you, i would not be so sure about that.