I used to feel guilty for dropping the ball on my story Scars Run Deep and Wide for as long as I did, but in the end I did finish it. I feel a tad bit guilty for saying there would be one more story for Scattered Pictures where as now I'm thinking that probably will not happen.
Reading wise, I don't really have a lot of guilt. I know I'm picky and sometimes maybe I feel bad about not giving some stories more of a try, but I do try to get into a fair share before clicking out. Once I do commit, I feel like I'm a pretty good reader/reviewer.
A few confessions of mine: If a chapter is really long and wordy, I tend to skim to just the dialogue to get an idea of what's happening lol
I always look at people's reviews before I read their story. Not even to see what people are saying but to see if they bother to respond. If they don't, I'll skip the story.
I also look and see who is reviewing a story and if it's a bunch of names that I know do not like the same things I do, I tend to take that into consideration.
Again, I rarely read the actual reviews though because I don't want to know the plot before I read the story lol I'm so weird!