He's potentially giving up 5X that by leaving the NHL--in purely economic terms that's not rational. Even if he's already made a bundle. In any case, I think it's great--I'm happy he's made the money he has and I'm happy he can walk away and go do something because he wants to, not because he needs to.
this is a point that gets lost whenever salary is discussed -
the point of making money, for most people, is to be able to later be free to make decisions you want to make, without thougths of cost/money holding you back
many posters here think everyone's atitude is (should be) that the only important consideration is making even more money, just make as very much as you can for as long as you can
some people stop counting and look at not just the security their netw worth provides them, but also the opportunities they've made possible for themselves
$500k + home + car in a beautiful world city, still playing pro hockey, but with much less relentless and physical grind (wide ice, shorter season) may not make Klein alot richer, but he wont lose money, he'll have interesting times and hopefully stay healthier and enjoy life after NHL hockey