>>10
better is very subjective in itself.

if its a once in a lifetime job opportunity that will allow someone to realise their dream, then yes, that's definitely better for the person.

but usually its not so clear cut.

and in a perfect world, of course it would be easy to just say 'i'm going to follow him/her for the sake of our relationship' but realistically there are just so many other concerns to address, for eg. financial problems, being tied down yourself etc.