When I was playing a lot, I enjoyed Powerplay. I went whole hog, followed the Redits, downloaded the spreadsheets. In a sense, it was nice having a "goal" to accomplish, even if my contribution was just a drop in the bucket. But, at least I felt the sense of being a part of something greater.
I feel like you can get something out of powerplay if you can see how you doing your small part, along with all the other people doing their small part, is actually adding up to something consequential. It's nothing big or flashy, and it often goes unrecognized (though a cool 50 million is nice), but at least you're "playing with purpose".
These days, I don't play much, so I've hopped out of Powerplay. The small rewards just weren't worth the hassle. It is nice, since I did pay such close attention to it in the past, is that I notice it happening in the background much more now. Sort of how if you were ever a painter, you'll start looking at the walls a little closer when you enter a room, just to see what sort of varnish people chose. Nothing that really impacts you, but it makes you more aware of the little details that surround you.