I'm not in the tippy-top bracket, but I like my low-stress, non-managerial, 8- hour-a-day, jeans and t-shirt-dresscode job.
In short I'm lazy.
Don't get me wrong though, I'll hit that top bracket soon. I just need to switch jobs a few more times.
BTW, I'd like to personally thank the folks at Monster and Career Builder for indirectly helping pay for my BMWs.