I've got no issue regarding buying TV episodes (or series) on home video. But I am bothered by this type of behavior:
Although I have purchased things like JP2 and 3 because I had to have the whole set, not because I liked the movie
Bluntly, I think it's silly to buy something you don't like, won't use, and are only getting because of some "need" to collect. Consider: every movie you bought to be "complete" is a movie you could have bought that you would actually enjoy. Or 10 DVDs you don't want is a new DVD player.
I find it helpful to remember that Michael Crichton, George Lucas, Steven Spielberg, etc. have a lot of more money than I do. There's no need for me to buy their movies unless I really like them.