International relationships

Hi everyone, I decided to start this thread because I am experiencing some conflict with my family regarding my international relationship. They are really concerned about the idea of me marrying and starting a family a long plane ride away from them in a non English speaking culture. They bring up issues like the fact that my boyfriend and I will have to decide who has to leave their life and their family to come live with the other one. They gave me examples of their friends who married internationally and had to go through this. They remind me that by staying in a long distance relstionship, I am not taking advantage of the social aspect of being young and in college, where I can date all the time.
I know they are right about all of the points. But, my relationship is still worth it to me, and I have always wanted to live outside the US as an adult.

I want to know, for those of you who have a smiliar experience (there must be many of you), how do you combat feelings of guilt regarding leaving your family? What was/is the hardest part of having an international relationship? What makes it worthwhile to you?