I divide my SP about half half between immediate ROI and long term community building (incl. Curation). That sounds annoying, but I do have to make a living too and so if I didn't have income opportunities I'd put that ROI half into stocks or something else.
I don't use autovoting on my main account but i can understand why people do. And I try focus my voting towards minnows where a few cents is actually a helpful morale booster. I'll take a lower immeduate ROI on this aspect of my steem activity in exchange for long-term growth.