<human>: I've been offered places on postgraduate courses overseas in space engineering. Unfortunately as my country has approximately zero jobs in this area, if I do one of these courses, I'm pretty much booking myself a one-way ticket out of here, leaving my friends (to whom I'm very close) and family (likewise) behind.

On the one hand, my interest in engineering and science originally came pretty much exclusively from an interest in space, both in fiction and in reality. On the other hand, I'm not sure how happy I could be, even in a "dream job", having left these friends and family behind. I've been very lucky with my friends and feel that while I may make friends in the future, those friendships will never be as strong as with my current friends.

So, what I'm wondering really is, would you or have you ever chosen to do something like this, and how difficult is it?

Can you summarize the given text in a few sentences?
<bot>: I can move abroad permanently to pursue a dream career, but want to know how easy/hard others have found moving away from their friends/family, as I'm worried about whether I'll be able to cope.