To answer your questions in the order you asked them.
No, unless it's a review. I hate the fact that sometimes a review by me and indeed, anybody else, can have about 200 views but no comments. It's always been something that has annoyed me ever since I started writing them. Many people take hours, days, maybe even weeks writing, fine tuning and making their reviews perfect then no one comments on them.
As for the badges, seeing as the only one I'm missing is the 'Forum Inferno' badge for having over 100,000 views and I'll know for a fact I'll never get it, I don't really care any more. When I started here, I wanted every badge going.
Whenever something takes my mind, yes. Hell, a couple of months ago, I was going through a thread making patch. I made around 6 in a month in Off-Topic and all of them where...well, slightly crazy. >>
And I create a thread to gather people's opinions and to see if people are willing to discuss weird things that they never normally think about, like whether or not you find armpits attractive or if you believe that karma exists. And I create reviews to get my opinion across and to also have people criticise my work/writing style.