Perhaps I'm old school but other than my house, and a Yamaha RD250 I owned when dinosaurs still roamed the earth, nothing has been mortgaged, rented, leased, HP'd or PCP'ed.
I'm not sure I like the idea of 'renting' a car for 3 or 4 years then handing it back and starting all over again.
Perhaps I'm wrong.
The tax system encourages it
Above a certain threshold, 100% of my hard earned....... well earned at least dosh, goes into my pension. It will of course be taxed on the way out, later when I retire, but currently 100% goes in.
My alternative is 40% goes in my pocket and 60% on paying others so they don't have to work.

As pointed about above it's a combination of things, to ensure I get the most out of it.
It's quite possible I will soon hit another limit, a cap on pension contributions. So, do I go EV, do I take the money.
At the moment, the EV does look the more tempting option, I sacrifice some more dosh to keep more of it, but as you say I am renting it.
It's actually a very strange system, as the more you earn, the cheaper the cars become.