Hiya dude!
Well im only 20 worked for 3 different airlines, and flown for 1. Needless to say you meet alot of interesting people along the way.
I never went to uni either and the same thought went through my head. But luckily there were some girls n guys my age on my shift when i was a psa- who never went to uni either and we had a ball. We have all moved on to A.T.C or flying for different airlines. But we all still keep in touch, and regulary meet up when we not working.
When I started flying over a year ago - in my opinion social life improved, not only out with cabin crew ymy age but also some of younger pilots -who only few years older than me.
So mate it can be done,
happy flying!