In your post you said �its enough to live on, but I�ll never be rich�.
If you want to be rich then people like you and me have to work for it, and work hard at it. The periphery details like family and no stress go out of the window, for a few years until you have �made it� at least. But by then, what have you sacrificed and missed out on? Plus there is no guarantee that it will all stop. The higher you go the more stress and less inter-company friends you�ll have, and of course, the higher you�ll fall. It�s a risk. But are you willing to take it?
It�s a decision only you can make as it will also depend on the work involved (interesting, challenging, promotion prospects etc) the corporate culture (work makes you rich) and whether you like the idea - for a time � of being a small cog in a very big wheel. As said above, what is the motivation for the move, to get rich or to leave an unfulfilling job?
If you are up for pulling out all the stops to get rich, then why not take the plunge.
From personal experience, I would have done it a younger age, and I did. In recent times I have given up the dollars and focussed on less stress and a happy family life, but that is because I am able to live comfortably and enjoy work. I found the more you earned the more you needed, enough is never enough, and I was earning big bucks in London. The only stress I have now is that which I put upon myself, but its only enough to keep the edge, go the extra mile and stay ahead of the competition.
Ten years ago I would say chase the wad, but now I would sit firm with a happy balance.
Good luck with the decision, I don�t envy you.