I stopped watching after season 3 - not on purpose, just got sidetracked by heroes and life in general. I don't have cable tv so I just buy stuff that may interest me if it goes on sale. For example, the 1984 tv series V I picked up recently. Memories!
I have heard people both loving and hating the ending, and being indifferent. I think it'll be a good show to watch, I'll catch up in the wintertime. I don't like hearing that things don't wrap up though! In the beginning I was making mental notes of stuff that I thought were clues to a bigger picture. I've long since forgotten, I guess that means I won't be disappointed lol.