Ultimately, probably so.
1)But that is just it.. I would never "need" to fly anywhere, I could have a perfectly happy life taking a car, or horse, or train, or ship. The only thing that would necessitate my creating an airplane is my innate greed to get there more quickly and more efficiently.
2)That is absurd, if all "production hours" are equal, then why wouldn't I just spend fifty hours on a chair that should only take two, and therefore get more for less? Just because I spent 50 hours making something does not mean it has a value of 50 hours to anyone else... nor should it.
3)So whoever is using something would own it?
1) Why? Why? Why? Why? Why? And no you wouldn't have a perfectly happy life if you were forced to traverse the atlantic on ship it would take weeks and you would get sick.
2) Hours of production not hours of thumb twiddling.
3)In a lot of cases yes.