_Bro said:You'd save money taking it to a bike shop and asking them to convert it for you.
It's like a $50 process. Here is page about it.
That page also has the most ludicrous explanation for single speed ever:
If you're riding for sheer pleasure, or for exercise, you don't necessarily place that high a premium on output results, as measured in speed, distance or vertical climb. Instead, you may care more about the actual experience of riding your bike. In this case, you may be a candidate for a singlespeed bike.
Riding a singlespeed can help bring back the unfettered joy you experienced riding your bike as a child. You don't realize how much mental energy you devote to shifting until you relinquish your derailers, and discover that a whole corner of your brain that was formerly wondering when to shift is now free to enjoy your surroundings and sensations.
Paradoxically, a singlespeed is, in another sense more efficient than a multispeed bike! While the single gear ratio will not be the "perfect" gear ratio for all conditions, in the conditions which fit the single gear, it is considerably more efficient mechanically than the drivetrain of a derailer bike.
Changing gears on a bike is (eventually) a completely instinctive process. And because my bike is geared appropriately for say, a mildly steep uphill, I can actually relax while I ride. There's LESS concentration required. On a fixed gear, that hill is overcome by sheer effort and willpower.
And the second bolded part. I don't even...
His point about simplicity is fine and he should have stopped there.