What an incredibly negative thread. You don't know if you've ever truly loved your wife??
If you had any self-respect, you'd leave her since it's clear you really don't care for her. Don't you think she deserves someone who really, really wants her?
But no, you'll stick around and make everyone miserable, including your child for another 10 years or so. Or until someone 'better' (equally selfish, no doubt) comes along who shows an interest in you. You probably won't actively make it happen, but you won't turn down the opportunity when it comes along. This is so classic textbook.
God, selfish people are so boring and predictable. Next!
Second thoughts can generally be amended with judicious action; injudicious actions can seldom be recovered with second thoughts.
--Cyteen by C.J.Cherryh