Yeah, it's a bit silly with too many achievements, but honestly, it's no big deal. Unless you're compulsed to get them all, in which case i understand your exasperation. Me? I go for achievements, obviously, but i don't care about the ridiculous ones. Things like "beat the game on ultra extreme monkey difficulty without getting hit once" are both insane and inane. Mostly i just want to have a fun time playing. Getting achievements in doing so is just an added bonus.
But you know what bugs me the most about Steam? The total inability to play LAN with YOUR OWN DAMN BROTHER IN THE SAME HOUSE AND ROOM without buying two copies of any given game. The only game i've seen in Steam that outright doesn't do this is Borderlands. A few other games have workarounds (that don't require the breaking of multiple laws), but in general, if it's Steam, forget about LAN. Unless you're either willing to buy multiple copies or are blessed with friends who already own the game. Worst is it when you buy a CD in a store, then to your horror, "HAY GUYS I AM A STEAM GAME." Bleh. Why buy a CD when it just jumps into Steam anyways?