sounds like you have a solid analytical mind to weigh the pros and cons; moving to another country is nothing short of a complicated and long-term adjustment. Your first line made me think of an excellent article a friend, Kit wrote - I'll have to go find and share it with you - it is truly worth the read.
But meanwhile - I wish you nothing but the best as you decide! As Benighted said - I do hope wherever you are -- you'll share where your next adventure takes you! - even the love ones! ;-)
Cheers Niko!