Unless you explain how you
Unless you explain how you acquire your money to buy vehicles to begin with, you have no business telling people what's a selfish purchase.
Not to mention that buying an older used vehicle is like recycling on steroids. People who are willing to reuse what someone else discarded for something newly made are generally far from being selfish. You need to look in the mirror to see how wasteful your lifestyle really is before criticizing others for theirs! I'll be willing to bet you haven't taken into account the totality of it all.
By the way, battery power is the oldest technology of all if you want to get technical. Batteries will be nearly useless in another 30-50 years or so because it's about the worst form of electrical energy storage there is. It's a chemical energy storage system that needs to go through electrochemical conversions within the battery, which is itself a wear item and requires an excessive superstructure for containment given a cell's small form factor. It's an incredibly wasteful way to store such energy, when you could just store chemical energy externally or even use something like a flow battery.
The problem with ICE isn't the carbon-based fuel, it's the inefficient way that combustion is converted into mechanical energy and the byproducts thereof, which cannot be recycled. There are far better ways to store and release chemical energy in a closed loop process that is efficient enough to run things that don't require wheels and paved roads. It's mind boggling how closed minded people have become these days as if battery electric vehicles are really the long term future of transportation when that's about as old a technology as it gets. It's nothing but a stop gap until a truly revolutionary technology takes hold. Unfortunately, we haven't seen major investment into revolutionary technologies for about 50 years now, which leaves us with nothing but tiny evolutionary improvements that don't add up to much.
What happened to thinking big? How long has it taken to get almost nowhere in quantum computing, artificial general intelligence, robotic locomotion, distributed trust, etc? We have inefficient quad rotor drones starting to do actual work only because there was no real investment in robot locomotion. I don't even know how old that tech is tbh but I remember drawing up plans for such devices over 20 years ago because I didn't like the RC helicopters of the time. And we have the useless wasteful Bitcoin because nobody bothered to invest in distributed trust and intelligence, which would've made blockchain and proof of work obsolete from the start. I had already personally rejected the idea of a globally synchronized ledger when I was working on plans for a distributed cryptocurrency some 15 years ago because that obviously won't scale or allow for the micropayments needed for an intelligent IoT economy. There are so many better ways to accomplish that but again most people seem to lack any vision...