1. Does a remake damage the integrity of the original film?
Depends on the integrity of the original film. I go to the church of "remaking bad movies to make them better." I watched the Sinister Urge episode of MST3K a few days ago, and in the end I thought it had the potential to be a decent action flick if given to the right people. I also perfectly understand the reasons for remakes back in the old days of Hollywood, back before VCRs and oversees shipping.
A remake of a good movie, however, is pointless these days. It'd be much cheaper to just rerelease the original film and not piss anyone off. Yes, remakes can easily damage the integrity of a film, and if a bad remake stops you from watching the original, then it's a crime.
2. Have you ever read an entire book written by someone who fundamentally disagrees with your point of view on any subject?
Besides the Bible? Off the top of my head, Tim Allen's "I'm Not Really Here," which was a funny enough book to read through, but I don't buy into the theoretical physics and dogmas he explored in the book.
3. Yes or No... is MST3K better than Rifftrax?
Oh, nothing thus far has been able to match MST3K. Rifftrax is great, but the character interactions and storylines really brought the show to a level that's been unmatched sense.