After aquiring the electorate badge, I suddenly became tired of voting. Now I'm running for the steward badge, and I probally will just ignore the queue after 1000 reviews.
I understand that 1000 review is more than enough for each user in a lifetime. But voting seems different, there should be a reward for continuously voting either up or down, beyond the 600 threeshold.
Well, I think I got it. Although badges do stimulate a jump-start into a good habit, as @dasblinkenlight said, they also can have a side-effect of stimulating bad behaviour for "badge-hunters".
I also would like to make it clear that I did my job seriously both when voting and reviewing, and maybe I'll restart voting soon. I do enjoy SO a lot, mainly because I learn a lot here. This
rant question I posed can serve as a good reminder to those who feel they work is a waste of time.