I also see very few wizards actually bother with a familiar, too many liabilities.
The only time I ever see familiars taken is in a certain style of game, where the player wants the bonus it grants, and then kinda handwaves away the familiar and never really acknowledges it (unless it becomes really important), and the DM agrees and never brings up that the familiar is actually there. (Kinda like V in OotS).
Personally, in 3.75/4e/whatever comes next, I'd rather the familiar be replaced with several options, one of which can be a familiar, and give alternatives. Heck, it was optional in 1e and 2e since it was a spell you had to find and cast to even have a familiar at all (and in my experience even fewer bothered with, since most DM's I knew made it hard to get new spells, and familiars have always been huge potential liabilities).