I think lumping FG & SS together is a big mistake. The only similarity is a single gear ratio. I have some dedicated SS bikes and I have to say they're fun in that they require a different approach to the hilly terrain where I live and generally remind me that I don't need to be as 'twitchy' changing gears all the time as I can be sometimes. But the riding/athletic experience is just like any other bike except with a handicap of a single gear. FG is an entirely different deal in terms of road feel/feedback, anticipation, muscle use and -of course - no resting. I don't understand why you wouldn't ride whatever you want to ride & just enjoy it....I think all bikes are & look cool when they're being ridden - even the dorky looking ones!