did your wife know when you married her that your love was contingent upon a sex quota being met?
Sex/Kissing/Hugging is a pretty important part of a relationship. Ask literally any therapist.
Reducing any important part of a relationship to nil is going to cause problems with the relationship.
You also take for granted that you are going to see them every day, and they're not going to move to Taiwan, for example. If they did, you would expect a series of long, involved and honest discussions about how to manage that change for both parties that involves compromise and wanting both people to be as happy as possible.
It's not unreasonable that, when you marry someone, you intend to continue kissing/hugging/having sex with them.
If the long, involved, drawn out discussions about the future of their sex life haven't happened, they need to happen.
If they have happened, and this person is unhappy with the end result of the discussions, he needs to consider what action to take, if any. That's up to him.