same here, grew up on big wheel to training wheels to coaster to bmx to mountain bike to ten speed to road bike, then recently fixed gear. I love my fg, but i couldn't enjoy a 300mi weekend camping trip or a 3 month tour on a fixed or ss. When I tour I take the bike with gears (or even a longer ride to anywhere); bicycle gears really are simple mechanisms, realitvely cheap, easy to adjust and maintain (especially when you spend your days rebuilding engines). Our legs are an engine, and there is a reason every motor vehicle is geared. I love having a ssfg because its light, (mine is) cheap, and I dont mind locking it to a street sign to go drinking (and track racing which is awsome, I'd love to race someday). Its alot easier to drag it onto the subway, up to an apartment, etc. Also, like the above poster said, you really only use 2 gears riding around town. But load that bike up and head into the hills...
How I view cycling anyway