Even with my Steem Power it doesn't seem like much in the way of curation rewards but it starts compounding overtime and I can see that in a year or so it could become worth a lot more for sure.
My issue is there is so much content that I don't have time to look at it all for all the people I'm trying to support. Plus there are optimal time horizons for when the upvote will produce the maximum amount of curation rewards.