I race my SS in xc races and compete with the geared guys. I love the simplicity and lack of maintenance required.
Use, abuse, hose off and shove it away. I got 2 years out of a chain and rings!
If you like to ride and not to fussed about where you come, go for it :0)
PS if your down south, the SS champs are in two weeks time at Pippingford. worth coming to have a look