In the past I rationalized my Litestep use by the claims that it was faster and hogged less memory, and being the little hacker-wannabe this was enough. Nowadays, however, my themes have evolved, and though they still consume very small amounts of memory, I definetely cannot say the same about CPU time.

This is of little significance though, as computer processing power has grown exponentially and most LS themes have not matched that.

All in all LS should not be used because it consumes less memory or recources, as I believe both memory and resources are much cheaper than the frustration you experience learning this thing.
Litestep is good because it can do things Explorer cannot.