Husband and Marriage Advice

I have been trying everything to conceive a child. For years I thought it was my fault. Ever since my marriage began I had issue with his unhealthy, unclean, unorganized, and procrastination lifestyle. He won't even change his health for the better. I found out that he is the reason I cannot have children. After 3 years of dating and 3 years of dating have met my breaking point. Or rather he has. He said he won't change. But I shouldn't really be mad right? I want to raise a child and my husband is practically a two year old. Since the house is under my name (family inheritance) and our finances are not combined (for security) I'm thinking about ending it. I have had doubts for years now but this is my breaking point. My parents were right about him. He wasn't the one for me. I gave my marriage priority over them and now they are out of my life. I'm alone and childless. Where do I go from here? I have no friends and don't know how to socialize well...