Is the grass greener?
Well, there is ONLY ONE WAY to find out - go there.
If it is or if it isn't ain't really the whole point I don't think. Having an answer (even if it's not the one you hoped for) is better than forever wondering what shade the grass might have been for you...
That's what I say until such point I feel any different. Which of course I may do in x years time. Who knows? Not me!