I have been on both sides of the fence on this issue. I was married for 16 years in a less than satisfying relationship, and now I have been single for 12 years. Having experienced both sides, I vote for the single life. Not that I am adamantly opposed to marriage, however I am adamantly opposed to unfulfilling relationships.
I believe life is too short to waste years stuck in the dogma of doing what is right. Screw that. Do what fulfills you, because in the end, on your death bed, there is no comfort in knowing you sacrificed your heartt's desires to be with somone you do not love, but believe you must be devoted to.