I’m wondering If I am alone with this dilemma. My wife gifted me with a 6M13-7020 (S/N indicates Nov 1991) during our wedding in 1998. I wore it for the equivalent of 2-3 months spread over 20 years. And those 2-3 months produced characters to the watch (fine linear scratches).
It’s still my most cherished watch and I replace the battery as needed. I just had a service done first quarter of 2018 and it occupies position 1 on my watch box. But I’m still afraid to wear it for fear I might wreck it.