I usually seek quality and I have to like it too. 75% of people I follow are photographing enthusiasts and they make quality content( mostly ). There are several 1 photo posts without much talk coming from them too but I don't classify this as shit content, sometimes I do it myself also.
My upvote ain't worth shit but I also upvote many certain people to keep them motivated and not leave the platform because their posts are quality and I want to keep reading them.
A couple of weeks ago I cleaned my following of people who are months inactive and I see no point of following them. I remember u did a post a while ago where you asked for awesome blogs to follow ( mm, I believe it was you). There are 2 names @dimitri0610 and @chaseburnett who sadly are inactive for months now but no doubt they were the 2 best photography blogs here on steemit and I refused to delete them from my following. If I could I gave them 200% vote for every post they make. Anyway, why the fuck do I tell this to you, it's not even a topic here. Just check them out, if they start posting again some day you would like it.
I am already following Chase, and it always sucks when someone has awesome content and they stop posting :( "You can't do this to me, I want your posts and it's not fair that you get me hooked first and then just LEAVE!! :( :("
Life is unfair :(
I think you covered the reasons quite well.. but I do autovote everything a poster puts out if I like the content 'usually'. For exactly that reason. I guess that would be my 'add' in comments. As you two are saying - I want someone who posts content I like to stick around. I figure my vote is a LITTLE more incentive to keep going.