To Move or Divorce...Need Advice?

My husband wants to move closer to where he works. He has a family business that he started without discussing it with me a few years back.He knew the job would keep him away from our family and at the time stated we wouldn't be moving there (2-2 1/2 hr away). My husband now constantly hounds me about moving there. I personally feel like it's a bad decision b/c my husband's family attempts to have no relationship with myself or our son and usually ignore us when we come to visit and never call to say hello (They've called like 2-3 times in the 8 years we've been together- and no there has never been conflict that I'm aware.. they have been like this since day 1 of meeting them). They show obvious favoritism with the grandchildren (and thier own kids) such as buying extreme gifts ($500.00+) for some grandchildren at Christmas and coloring books and crayons for another (just an ex) when all the kids open presents today.. just rude if you ask me. They also talk about things that I would consider adult conversation - such as they have custody of my husband's sister's chidlren and the kids know every detail of how crappy their mother and father are which I think it is inappropriate to involve children in adult conversation. I think kids should be aloud to be kids and not know all the wrong in the world. I would prefer my child not to have to be around that all the time. Anytime i have attempted to say something about my husband's family he gets completely defensive and angry at me. My family has very close relationships with my son and husband and I. They are helpful to me when my husband's not home should I ever need anything. If we move my husband will still not be around any more due to when he works he works like 15-16hr days and we he's off he comes home.. so I still would not see him on days that he works. His family would not be able to ever help with anything such as if I got stuck at work and needed someone to pick up our child on short notice and quite frankly i don't know that I trust them to do so. My husband continues to force this conversation about moving and will not speak to me for hours-a day when I say I think it's a bad idea. I should also add that my husband decided a few months back that he wanted to go back to college and quit up there and moved home and found a good job that paid decent and would allow plenty of time for family and school. He was very happy or so it seemed except he didn't like living on less money than we were used to. His family called nonstop begging him to come back and basically saying that the business would fail without him and his parents and sister could risk losing their houses and cars if it failed (normally they are in no way respectful or appreciative of the work my husband does- which is to work his butt off to support the whole family). Well my husband went back despite my pleading not too. Now he continues to pressure me to move to a place around his family and I feel it will be the end of our marriage. He says he will go with or without us. I recently found out I was pregnant, which only buys time b/c I would have difficulty getting a job while pregnant and would lose maternity leave. Also my husband and I make the same amount of money and I currently have been blessed to get a job that has great hours for my family - my hours and pay are rare in my field and it seems dumb to give it up adn move to spend less time with my family. I'm torn on what to do. I feel my husband will leave me if I don't move adn I feel that our marriage is doomed if I do. I also feel my husband is a different person around his family and is very heavily influenced by them when he is with them.. like their opinion often outweighs mine in marital decisions. Any advice would be great. Thanks