Hi Christopher, its nice to meet you. I'm so sorry you are feeling this way. Now that I know the truth about the "truth" I find myself being angry sometimes too. I'm angry at them for tricking me, and I'm more angry at myself for letting them trick me. And I'm angry at the situation that I'm stuck in right now.
But you can't let that take over your life. I know it must be hard with your wife being so into the cult and you feeling so under-appreciated and valueless but you're not valueless at all. The first thing you have to do is love yourself. It's not enough to just accept yourself, although that is a good place to start. It's ok to be angry and hurt, but it's not ok to feel like that all the time. Life has meaning, but YOU have to make it have meaning. Maybe pick up a new hobby, meet some new people, take some classes at a local college, etc. Don't let the anger and feelings of no self worth run your life. Don't let anyone dictate what your life is or what it will be in the future. It's YOUR life whether you think it just came out of nowhere or God gave it to you. It's YOURS to make it whatever you want it to be.
And for what its worth, I like who you are. I have enjoyed getting to know you from your posts and I guarantee many people on this site feel the same way. I hope that you can accept that you are a great person, even for just being strong enough to break free of the cult. You have freed your mind and heart from that eslavement and that makes you a hero in my book.
Hang in there