do any of them currently have kids?Let's see how they're all doing in their 50s putting kids through college and planning on full retirement. Some are probably smart enough to plan well, but I'd be willing to be that if we looked at top 5 DH riders over the last 20 years the vast majority aren't exactly set up.
also, retirement outside the US is waaaaaaaaayyyyyyyy different than in the US. and college outside the US doesn't cost your entire family tree's life savings.