Hello! I'm a fresh HIMYM viewer: I just got spoilered -ye, I know, and I feel empty. I've come around half of season 4 now and I already am so down about all this. I like Ted and Robin and I also like how Barney is starting to evolve and going to make a move with Robin. But now that I know how things are possibly going to end, I feel confused, sad and don't want to watch it anymore and YET it's too awesome not to be continued. I knew I shouldn't have watched the pilot in the first place. SOS?
Aah I was unfortunate (or fortunate, depending on how you look at it) to have come in right before the show aired its ninth season. I got to watch it live, get excited and savor every moment, knowing it was the last season, and Barney and Robin were safe. But I also had to watch my OTP (and well-known endgame) divorce, and suffer through close to an hour waiting for things to get better in the pitiful finale.
My advice is to reserve judgement and keep watching all the way through. Then let all your feelings out! Or just don't watch the finale lol