I just received an email notice from Canon that the original EF 70-200mm f/2.8 L USM will reach the end of service life on June 30, 2026. While it's always a bit sad to know a product you own is at the end of its service life, I can't complain since it's been 31 years. I cannot even begin to count the number of hired events I've used this lens at (dozens and dozens), along with how many hobby shots I've taken with this. I take very good care of my gear, and I've had other pros I work with say how it still looks brand new. It seems to work like brand new as well, and hopefully will for many more years.
All I can say is "Thank you Canon, for a product very well made!"
