Is it normal to be happy that barney stinson remained single in the end?

I mean, I have noticed a trend where watchers insist that characters such as Barney who fuck bitches and are happy about it are in fact not happy and they should learn the error of their ways end up with some particular woman.

But why didn't people get the hint the first time, when Barney and Robin's relationship failed, and it literally failed on many, many levels? It literally sapped all their energy and vigor out of them. And yet people were still disappointed about the HIMYM ending?

Barney Stinson is a character whose main selling point is that he's single and fucks bitches. That's what he does. That's what's so great about him and that's why so many like him. So why were so many people disappointed about the fact that he and Robin got divorced? To me it was practically a godsend, a return tothe status-quo of Barney's carefree bitch-fucking days. The way it should be and should remain.