There are a limited number of ways to cross the Potomac from No. VA into DC. The MUP is a really nice option, and I am glad to have it, but it is doesn't get treated or plowed, so ice and snow are a headache sometimes (no studs for me yet). The plethora of walkers, joggers, and 5 mph recreational cyclists on nice days can be an annoyance, too. I occasionally wish there were another way across just for variety. I guess that does leave me feeling a bit boxed in.
I'm not sure my situation is really any worse than anyone else who has to deal with bigger rivers or other geographic/geologic/hydrologic obstacles/features to contend with, though.