You're mental to spank a grand on an electronic device that lives outdoors if you don't need it. It's like replacing a boiler early.Not sure if this is an electric car question, or a general house and home one.
Would I be mental to not have a 22kw charger installed for future proofing, given I'm fortunate enough to have a 3 phase supply at my property?
There would be more work involved, and it wouldn't be as clean of an install due to location but it seems a worthwhile investment given the way cars are going.
If you are doing electrical work and you have electricians on site working in the same area as where the car charger would go and it makes sense to run the cable at the same time then yes it may be worth running a cable but do not buy a charger to put onto the end of it.