Married to a Model... But not loving it.

My husband and I have been together since we were 19 and we have done a lot together. We have modeled together, traveled, struggled, went through school together, started our careers together and finally had a baby and bought a house together. He is a competition bodybuilder and still models for local designers and magazines. Great father and super supportive of anything I want to do with my life. Sounds wonderful, Right? Right. Well, why am I not fulfilled? I am barely attracted to him anymore and I constantly feel like I take on 90 percent of the responsibilities while he gets to just coast on my hard work. Example: I have found him all his jobs, went through my pregnancy without him coming to any appointments before 28 weeks, paid all my own bills with my money including my car note, prenatal and post natal care, bought our house with my money that I saved and even closed on the house without any help from him. I am exhausted. I cant even get out of my head enough to have sex with him and really enjoy it. We have tried therapy and even with that he went because I wanted it and he never did anything with it. Am I crazy to be reconsidering our relationship together or should I just shut up and count my blessings? I feel like a smart woman might stay because its better than most alternatives but I feel like my soul is dying and I dont like the person I am becoming the longer I am with him. I am not sure if I need advice or solidarity, your call on how you respond.