There were a lot of things that were very hard to swallow in the finale, but I can still accept.
- After finally seeing Barney develop from a serial shagger to someone willing to commit, and then see all that cancelled in an instant was hard to swallow. But at least afterward we see his "redemption" upon having his baby. While inconsistent, it was still a satisfying arc. I can accept that.
- After spending several seasons convincing us Barney and Robin's relationship could work, and spending one whole season on their wedding, only to throw it away in an instant, was hard to swallow. But I can still accept it. They were never a convincing couple, and its common nowadays that couples divorce. Fine. At least they remained friends. I can accept that.
-After 9 seasons of alluding to the mother and spending 1 whole season having us invest in her and showing us how awesome she is, we find out that she was actually dead since the beginning of the story's narration. This was hard to swallow. But fine, I can accept a sad ending.
But what I absolutely CANNOT accept AT ALL is the premise of Ted going back to Robin after the death of Tracy. This is just so wrong on so many levels. First it makes Ted a manipulative dick, he basically used the story of the mother as a cover to ask the kids permission for him to date Robin again. Second, it just shows that despite all the happy years Ted had with Tracy, his heart was always still with Robin, and Tracy was merely a placeholder for 17 years. Third, the kids were so damn encouraging in telling Ted to go date Robin. That was borderline offensive. In short, the writers just basically took a massive dump on Tracy. She was utterly undermined and devalued, strung along by Ted for 17 years, led to believe she was the love of Ted's life until she died. Makes me sick to my stomach.