I had a Brooks Pro on a bike for 30 years. It was still on the bike when I sold it to a vintage bike buff. I actually think the brooks is what sold the bike!

I no longer ride a brooks (personal preference), but do ride a leather covered saddle that I treat about the same way, minus the Proofhide. I carry a shower cap to cover the saddle when I have to park it in the rain for a short time.

Normal care: keeping it lubricated with Proof hide or Snow-Seal, not leaving it out in the rain, and drying it off with a towel when finished riding in wet weather.