I mine when computer in my bedroom is turned on. I'm not interested in mining at a pool that forces me to mine 24/7.
Therefore I'm not enthusiastic over PPLNS. Maybe
DGM would be better, but it's obscure and offers small rewards at the beginning.
Yes, poolhoppers are parasitic, and they wouldn't visit a pool without the base of honest miners.
But they massively contribute to finding blocks also , and finding many blocks attracts honest miners.
There is a rule in business: "IF IT WORKS, DON'T MESS WITH IT".