Science

I can think of. Everything in Space wants to kill you. Just existing is a sheer miracle up there. Since I was a kid, I thought of how neat it would be to actually go into Space. Then I grew up and got old (gryn). I could actually put myself in their shoes and admit I'd be scared witless. Love of exploration and the most courageous of explorers... it blew my mind when I made that realization, and it still blows my mind that there are people out there that brave.

Funny how the passing of time can impact your whole thought process on a situation you thought you'd already over-thought! Getting older = getting wiser? Or is it just that we lose that feeling of invincibility as you can see and feel your days being numbered.