I "get" SS bikes, and I have one (albeit that it isn't quite all joined up yet and recognisable as a bike). I "get" geared bikes, and I also have one.
I don't "get" fixies, at least not for daily pootling in the same way I'd use an SS to get to work. I understand the principles, and the physics concerned. I understand it must be a challenge to keep cadence and momentum while adjusting your riding style/balance to be constantly peddalling. In fact, come to think of it, offroad that must be bloody hard, as I'm fairly sure they don't freewheel (hence fixie - doh!)
I am however full of loathing as they seem to have been adopted by the sandal wearing bearded tofu eating soya-latte generation getting out of their Audi's and onto their ludicrously expensive pushbikes in order to save the planet. That is not to say that there are probably some genuinely top people out there on fixies, but the bandwagon has been well and truly jumped on - and it's time will surely pass. When it does, and we no longer remember the trendies and their pimped out fluoro creations, then I might find myself on one. Just as I now find myself on an SS.
The circle will complete itself. It is my destiny to ride a fixie one day (when I grow up a bit and stop being all grumpy about salad eating, food mile conscious, hemp carrier bag using environmentalist two-wheelists)