I'm not asking because I want to know - I'm asking because YOU need to know.

For the record, I'm almost 60 and I'm kicking ass. Can't speak for your mom but I imagine she's not ancient and crippled with age.

I think they'd be supportive of us doing what we want - for this reason I don't wish to take advantage of their good nature.

What? They would want you to live your life as you see fit and from that you conclude...you shouldn't? Because...that's what they would want for you? You would be taking advantage of nothing. Damn dude. Your family wants you happy.

I can't imagine it having opportunities in the same league as London.

Well I guess that's something you need to look into. Are the opportunities good enough? Relative to the quality of life? These are thing you have to look up and weigh with your wife - not me.

But from the above - and I'm just guessing here - you are reaching for any excuse to not go. Because you just don't wanna.

If that's the case, own it. Say you don't want to. If you really are of two minds, do the homework with your partner and sort it out.

Is it a big decision? Yes. Is it rocket surgery? No. Besides if you go for X years, you give it a sincere effort (and I mean SINCERE effort), and you want to go back? Go back. Planes fly round trip every day.