Should I divorce my husband before ever even living with him?

So here's the situation. Me and my boyfriend broke up and then 3 days later I found out I was pregnant (2008). At the time, I had already accepted a job overseas. Me and my boyfriend decided to get married anyways via a double proxy, meaning we got married online. When we were dating the sex was really bad, then I spent hours with him to make it somewhat good, but he's reverted back to his old ways. Wham bam thank you ma'am. So, he has come to visit twice and both times the sex was just horrible. When I told him we needed to work on it he said "you can't orgasm anyways so whats the point?".... He doesn't clean, or when he does its just a crap effort. He eats crap food constantly, and is kind of a kiss a$$ towards the guys he works with in the United States. But we have a baby, who is 10 months old. My job has offered me to go back to the States, but with a huge pay cut. Additionally, even when he spent time with his son, he wouldn't spend hardly any time playing with him. The last time he came to visit, I was in the bathroom throwing up (Stomach flu) and I was asking him to come sit with me and he said "I can't stay in here, and you need to stop puking so loud cause its bothering the baby", then he went back to watching tv while the baby cried... When we are together, he tells me he loves me and I do believe he does but I think he's just been raised to be selfish and he's really immature. He has yet to really bond with his son. He treats him like a puppy instead of the wonderful little baby prince that he is. I guess my question is this.... Do I go back to the States knowing that we are going to fight constantly due to us really not being compatible but lose my job status in the process? Or stay in Germany and raise the baby on my own (divorce)?