Ted tells his kids the story of the mother, but it focuses so much on Robin that it is obvious he still has feelings for her. So was he still carrying this torch for her the whole time? Was that the reason it took 7 years for Ted and Tracy to get married??
Interesting. Something to think about.
Again, living happily ever after with the mother is fairy tale, but living happily ever after with Robin isn't?
I like the ending because of the twist itself, not because Ted ended up with Robin.