This is a very valid and valuable thread because sex is a big part of any marriage/relationship. Although i do not agree with most mens `need` for sex - i also know that it is very important if a relationship is going to work.
A couple of years ago my 4 year relationship ended because my then GF simply did not want sex anymore - this made her very nervous when i touched her in any way and it was frustrating for me because i really wanted to touch her. I did not need or demand actual sex and i would have been happy for us to stay together with me simply touching her, but she said this was not right so we seperated.
I think i am trying to say (and knowing this from experience) that sexual contact is important, but actual sex is not necessary - unless you want kids of course