i cant say anything about how an mba will make your life better, i dont know about that stuff. but being away from those that you love for a period of time such as that is a very, very difficult thing to do. it is true that there are many ways to communicate easily now, but its still not the same as being there.
i had friends who had kids and had to be away for a long time. the thing that happened in there case was that their child grew so much, and they missed so many "firsts" and big things in their lives. i dont know how old your children are, but that may be something to consider. additionally, on returning, some of my friends children had a hard time re-relating to the parent for some time.
i spose this can all be offset by returning every so often, so that may work as well.
since the question is would i, i would say this: if i did not have a family of my own it would not be a question. i would be gone and have no hesitation. for me to go when i do have my own family, i would have to be pretty hard up to make the sacrifice. if things were well enough as they were, i wouldnt.
good luck with your choice. i hope whatever you decide works out for the best for you and yours.