These types of problems are what premarital counseling are for. I am not being sarcastic...I am totally serious. If the two of you had discussed this and come to an agreement before being married and having children...well...anyhow, I totally sympathize. It seems like a lot of people have issues like this, and what's done is done.
In my opinion, and based on my belief in God's law, really, you ought to do what your husband says is best for your family. If he can get a much better job there, and would be happy, he's going to want YOU to be happy and do what he can to make it so. This country is really going downhill, anyhow...if I had the opportunity (and don't get me wrong, I do love America) I think I would move to Europe. I only get to see my parents once or twice a year because they live across the country, so nothing would really change.
Plus, if he's making more money, maybe you'll be able to afford travel back and forth to visit.
It's a really tough situation, though, because I understand how lonely you would feel. On the plus side, you would be able to focus so much time on your child and husband (which is the way marriage is intended) and I'll tell you one thing...now that my parents live so far away (they have for about three years) my husband and I get along better, spend more time together, and I get along with my parents better, too.
But like I said, I sympathize...my sister-in-law lived in Turkey for about seven years and gave birth to and raised her daughter there for the first four years of her life...and now that she's back in the states, she won't leave. They are divorcing over that issues (plus many others, so don't worry...it's not just that)
Really, the two of you ought to sit down at night when you have lots of loving time, and decide what would be best for the family. Also, think about things that COULD make you happy while you were over there, and really talk about it.
Best of luck...I'll say a prayer for you! :)