Fact of the matter is that in the right environment, with the right mod and with the right kind of people on the grid, rFactor offers tons of fun. I have gone through mods that where plain and utter bad, but also found real treasures, like the V8 Supercars, the DTM 2007 and the recently released Historic GT & Touring Car mod.
I do not chose between LFS and rFactor, I race them both. I do it to have fun and variation and that is all that should matter. These constant "My sim is better than yours" threads does nothing good. There is room for both these Sims on the market, and they both deserve to be raced. Those who can't see that lose out on on a lot and should probably be pitied.