I was a "turn-key purchaser" but down to lack of free time, not lack of ability (professional mechanical engineer in aerospace and defence industry) so I really enjoy reading the technical discussion.
I wanted a driveable car I could modify and tinker with rather than a pile of bits that would sit in my garage for 5 or more years without turning a wheel. My workshop is pretty well equipped - lathe, vertical miller, 3D-printer etc. I wear a suit to work, but not 3 piece. Hopefully when I start ramping down my work hours I'll be able to get me and my car to more events.