I rarely have more than 1 beer on a weeknight, maybe 2, but generally its with my housemates anyway. On the weekends, I'll probably get drunk at least one night, out with my friends at a party or pub.
There are times however, once in a while, where I like to get somewhat drunk by myself and work on some artwork or just read something interesting. For some reason, philosophy is much easier to understand after 4 beers. One of the best days I've ever had was sitting in a beer garden along the Rhine in Dusseldorf, laying back Schneider Weisse and reading. There were people there, but I was essentially alone since I had a table to myself.