Yep! You've hit the nail right on the head.
Quite often I don't have time to write a good post but I always make time to read as many as I can.
I always leave a meaningful comment on them all.
If it's a post that I enjoyed, then I do a 100% upvote.
(I don't use the slider - it's 100% or nothing)
I try to use my voting power as often as possible but I never vote without leaving a comment first.
With all the Auto-voting and Bots, I think it's important to try and preserve the "human interaction".
The Human interaction will in the end be the one thing that'll mke Steemit big. In case that's missing this place will be deserted soon enough...