I don't drink often (maybe once every 3-4 months), but if I do, I tend to drink heavily. I prefer to drink things I haven't tried before, but failing that, I like rich, dark craft beers... things that taste like dark chocolate, peanut skins, and hops. Don't really care for wine, or liquor (unless it's mixed into something that's sweet and/or covers the taste well).
Reasons I drink heavily:
A) It makes food taste amazing.
B) Inebriation still has novelty for me, and I enjoy the experience.
C) Doing common tasks becomes a challenge, and I've always enjoyed added challenges.
D) As I work on overcoming my anxiety, depression, and self-doubt, it's nice to be reminded of what not having those issues is like. Helps me set a milestone.
E) I sleep well after drinking, and wake up feeling alert after 4-6 hours, unlike my usual 8+. It's a nice change.
F) It helps me find motivation, and reconnect with my inner life and interests. The mental block that makes it hard for me to start doing things like playing an instrument, learning to cook something new, researching something interesting, or even cleaning and organizing, seems to disappear. Discipline is not something I'd want to rely on booze for, but it does give me a noticeable boost in productivity. Even afterwards. EDIT: The positive motivation might just be a side-effect of being free of anxiety/worry for a while, and experiencing happiness uncolored by that.
That said, alcohol is not something I can afford. I'm also painfully aware of its negative effects on the body, and of my family history with addiction. Luckily, the next day after drinking, I often feel so nauseated and crappy that I'm happy to put off the stuff for many months, until the next time my friends want to drag me out to a bar or something.