I think people are actually a bit spoiled on this coin because the difficulty was relatively low and price relatively high for a long time, making mining easy. Now it is harder, but CPU mining really is still viable. You just need decent hardware (i.e. not a 5 year old laptop) a bit of patience and not expect to be getting lots of blocks every day.

Nevertheless I still support the goals of an open source GPU miner if GPU mining is viable at all.