I hated beer until I was like 19. I mean even sipping good beer would gross me out because it just all tasted bad to me. Eventually I ended up taking a liking to it though and now its all I drink. I even went to beer tasting school last year to learn about it.
This may sound retarded and condescending but I think that your taste for beer and other forms of alcohol will come with age. If you don't like it then that's that, but just give it some time and don't worry about it.
If people harsh you for not drinking then tell them to fuck off. Fuck the critics and the cynics.