Sorry man, and glad to have your comments, but you should've 'let sleeping dogs lie'. I've copied my response to here:
You don't get fixies?!
Harden up! Nothing good is easy: that's why we have to train and do foreplay. If you don't ride fixed, your cadence is square. "Coasting is a pernicious habit", and once you ride fixed you don't coast road bikes anymore, unless descending mountains. You don't know anything about gearing until you have only one you'd better get right. You don't know anything about efficiency until every hill and intersection is an equation to be solved in an ideal way. You don't know shit about traction, until you get feedback through all points of contact. You don't know anything about the machine, until you work on it yourself: sending a fixed gear in for servicing is like having someone cut your wood for you. Man up.
It shows class. It's cheaper than plastic.* It looks better than aluminum or plastic. It rides better than either. All three can crack: plastic cracks and immediately drops your face into the road, aluminum cracks and gives an hour to notice, steel gives you between a week and forever. Steel weighs only a pound or two more than plastic, and most of us should shed that off our asses rather than out of our wallets. Plastic frames never have enough tire clearance, and aluminum rarely does. You can spread the rear-triangle for a longer axle (aluminum or plastic would fail); and if really ambitious change the bend of your fork or dent a tube for particular fittings. You can have a welder fix it, put in more braze-ons, or change the drop-outs. Most of all, the real reason to get steel is that titanium is too fucking expensive...
*(carbon fibre reinforced) PLASTIC