I am reading these responses with great humor from the Oct 2023 perspective.
Canon made a brilliant move going to the EF mount and thus pretty much made Nikon irrelevant today, a distant third .
Now we see the RF mount has come but all your EF lenses back to 1987 are still 100% compatible where Nikon sticking with the F mount way beyond expiration date had to make totally obsolete nearly 70% of all F mount lenses and those 30% are marginal on the Z mount.
PS, I now can use ALL my R, FL and FD lenses on my RF mount cameras giving them new life and IS through IBIS.
Thank you Canon.