I am in my early twenties, and I have yet to drink my first alcoholic beverage. I made a decision a few years ago after weighing the negatives and positives of drinking against each other, and concluded that drinking alcohol provided very few benefits in comparison to the potential risks.
Well, I hated drunks, hated drunk driving, hated so many things about it... So I found a group of kids who knew how to have fun without it, and even after most of them started drinking (later than average), I still abstained.
Anyway, to the point... In my early 20's, I opened up a little, learned my limits, learned my preferences (I really don't like beer, but hard cider and mixed drinks are great - I like sour drinks like Margaritas and Whiskey Sours), etc... And that's when I learned the benefits of light usage. I enjoyed myself a lot more and found my altered state of mind liberating to a degree (less social inhibition, but I also feel like I can think clearer/faster when I am just a little tipsy).
If you believe you could be an alcoholic, then don't start... But otherwise, I'd recommend you break down some of those barriers you have against it - keep to a goal of only drinking once a month, and only 2 beers/ciders or one mixed drink until you are comfortable/stable.
Last - To the person who said they've only tried Bud Light - no wonder you don't like to drink... lol... Not exactly the cream-of-the-crop.