Hi all. I have been a roadie for several years and am now in the market for a commuting bike. I will use it for short trips (one mile to a few miles) on flat terrain with little traffic (occasional stop signs, few traffic lights). I plan to run to work, to the store, etc. The idea of a fixie or freewheeling single-speed appeals to me for the simplicity, but I am wondering if I will end up wishing that I had gotten a bike with more gears (like a seven-speed Nexus hub). I am looking forward to your insights and advice! Thanks in advance.