Old cars are easier to fix - and just generally more enjoyable to work on if you DIY. The one issue with old cars is RUST. Old cars are also a money pit - especially if your not DIY. Expect things to brake on old cars, expect to be stuck on the side of the road from time to time if driving a 50 yr old car.
If you want a Mustang and want to keep things easy, buy a new one with a warranty, forget about the headaches and enjoy. Maintain it perfectly and it will last forever.
I agree with most of what you said but,
Anything that's 50 years old will need some parts replaced and/or upgraded. Once those are done the chances of the car breaking down are pretty similar to a newer car. Even a brand new car, regardless of the brand, is subject to breakdowns and occasionaly being a lemon.
As for a new car with Warranty, sure you can't beat that;
but there is a certain feeling driving a nice 60s car that you won't get from a newer car with all the Plastic inside & out. Just feel the sheet metal on these and compare that to the newer cars and you'll know what I mean.
As you indicated the systems on these cars are very simple to repair & fix, that a DIY can handle most anything themselves if they posses the tools and know how.
-The power steering system is just about 7 parts, 4 of them hoses.
-The wiring is broken down into 5 or 6 subgroups, and each section is available for cheaps if you need to replace them.
-the same for the the engine, tranny, aircon, front suspension (this defenietly needs replacement as it is the Mustang's weak point), brakes etc.
Nothing complicated like newer cars, no Satnav, no computer that monitors this or that etc. etc.....
I would never want an old pony car or muscle car with an automatic, no way, no how!
The idea of the resto-mod is the best of both worlds, proper size of an old car with the modern touches of a new car and you have reliability too! Then there's the power modern cars make, no contest! Today you can have a 10 or 11 second DD w/ A/C and everything, just costs $$$$$!
Why not an automatic?
My C4 was upgraded with Raybestos racing clutches, new oil pump, and an ATI made to order torque converter and....and it kicks Bu..
& I'd prefer that to a heavy car with stick in heavy traffic.
As for comparing the ride of a new car to these older ones, you are right not much of a comparison, That's why I told OP he is comparing apples with oranges....
New cars with fuel injections, new technology in suspension, and all the computers & gadgets etc., can't be beat....
But you can modify a lot of things on these older cars, like the Engine & tranny, suspension, AC etc. etc. to bring'em closer to a modern car's performance level.
Yeah but like Steve said. I'd be concerned about rust
You would if the car has rust, if it doesn't and it's taken care of properly then there are no such worries.
Rust on these are usually on the floor pans, wheel wells and lower body panels in general due to road salt, and in the front cowl where rain water would sit and get clogged up by debris.