WOW, remember, people don't do these kind of things because they are easy, they do them precisely for the reason that they are hard.

I remember watching a documentary on people doing ultra-marathons (I think that's the name). Running 100 miles through the desert! I thought wow, WTF, why would anyone want to do that? But people do. And then I remembered people tell me the same thing when I say I commute 20km to work. It doesn't seem like big deal for me, but they think that kind of distance is insane!

You can say this kind of thing for many situations. Power walkers... Why don't they run? they look so stupid waggling about like that. But they like it and achieve crazy goals. Hell you could say the same thing for people swimming butterfly, it's the most energy draining stroke there is, but people do it and become champions even though breast stroke is easier.

Have respect for other people's hard work and dedication. Even if you don't understand it.