Alternate ending. I don't like the real ending. Since Robin and Barney got divorced the last season is kinda unnecessary, although it was funny. It broke my heart at the thought that Robin would never have kids.
Barney Stinson is also a Narcissistic character who is embedded in his own looks, money and likes to push his beliefs and views on others. He always has to have things the way he wants them or he freaks out.