I think experimenting and taking things already created and changing them and modifying them into something different is built into some people. And I believe it's been that way since man began walking the earth. We all have different things that drive us (no pun intended) and give us satisfaction. I would venture to guess that 99% of us on this site get a great amount of enjoyment from working with our hands. Whether it is just maintaining our vehicle, adding little performance or safety upgrades or the ones who do the full blown drive line modifications.
Myself, I can only afford to have 1 antique car. I would love to be able to have a bone stock fat fender and a hotrod. But that's not financially feasible. But I do want to drive it. And drive it a lot. I want to drive it everyday! I have 30 miles of interstate between me and work everyday. Sure I could take old county hiway but I'd still be 20 mph under the speed limit. These days that is not safe.
My plan is to modify to the point where I can drive my 48 on the interstate, safely at interstate speeds. And I love working with my hands and creating and modifying. It doesn't mean I don't appreciate the ingenuity and creativity that went into originally building my car. It amazes me when I think of what they did in the past with only pencil and paper.
A saying I learned long ago and try to practice is "Live and Let Live". Who am I to question others motivations unless I step into their shoes.
I bought a 48 Plymouth special deluxe that had the old flattie pulled and they put in a straight 6 Chevy and 3 speed. My plan is to go back Plymouth (Hopefully this gets me some brownie points after my rant). But I'm going with a 67 Belvedere 273 V8, auto and rear end. I'm also a student and fan of 1960's technology. But at least it will be all Mopar!