SP holders who don't curate are losing about 8% annually, but if they curate, it will decrease to around 4~6%.
financially speaking, the 3% difference is just too small to justified the time and effort invested.
IMO, the psychological satisfaction sometimes weight much more to a curator than any financial rewards.
and I'm agree with in his point that, the increase in platform-quality and thus the value of SP could eventually benefits SP-holders more.
RE: A case for eliminating curation rewards