Cos it's fun for us nerds! <snorting.laff>

That's why I enjoy reading books like
this which basically takes the Star Wars universe and tears it to shreds with science! It doesn't mean I've liking Star Wars, but I still find it an interesting read.
When we watch or read fantasy and scifi we often suspend disbelief of high improbable or impossible things; but every once in a while I find it interesting to stop and think about what would be possible and what wouldn't.

As Kevin Smith once said, if you ever had a rocket pack you'd "burn your ass off."