Well, let's see if any of these might be demotivating:
Voting bots that vote on the blogs of particular people, regardless of whether a particular blog adds value, and if you're not on the list, too bad. Nasty comments when one dares to write about politics. Being supportive of people who don't support you back. People voting 1 percent. Wading through barely literate copy that earns big bucks.

I haven't blogged in ages. I don't read, vote, and comment nearly as widely or as much as I did initially. At first, it was because I got busy, but that isn't the case now.

However, my wallet is growing because I particpate in some of the games you mentioned. It has been a more worthwhile use of my time lately. All those games scoop up a certain percentage of the available funds. I'm hoping it will be worth something someday.