The life of Jesus and Paul can hardly be called the "norm", so no their single calling isnt the norm.
Actually, I said their example is the NEW "norm". But, maybe even that isn't a particularly accurate description, especially if it's based on each individual working it out with God personally.
Gods stated purpose is declared right at the beginning of the bible that it isnt good for man to be alone. Therefore the norm is for marriage but for a few God calls to remain single to fulfil a purpose of Gods calling upon their lives.
Man doesn't have to be alone regardless of marriage. That's the benefit of Christian communal living, the way Jesus and his followers did it. Otherwise you'd have to say that Jesus did the wrong thing by remaining single.
The same kind of character that it takes to make a successful husband or wife is the same kind of character that it takes to be a successful friend. The only difference between the two is physical intimacy and even that can be substituted, to some degree, with holy hugs.
Also, in the beginning, God talked about people being fruitful and multiplying, but that command has well and truly been acted upon. Jesus ushered in a new mandate where people were meant to start focusing more specifically on a personal relationship with God, directly.
Special relationships between a man and a woman can be really amazing, but in his writings, Paul talked about how that wonderful relationship also has drawbacks, too.
It is learning to release ourselves from those kind of emotional attachments so that we can focus more wholly on God, which Jesus was getting at. Again, he made provision for people who could not handle this kind of teaching, but even with marrieds, Paul taught that they need to be working on cultivating an attitude where they are willing to forsake one another for God.