I lot of people post about their anti-reflective coating scratches or how hard they think their AR is, but how long does it actually last? I've heard that between our skin oils, environmental pollutants, cleaning the crystal with clothes, UV light and dog licks, that AR doesn't last forever.
Can anyone shed some light on this topic and perhaps share their own experiences? AR has been around for a long time (1935?) yet it seems like most folks here have newer watches where the AR is not that old.
Also, I believe Rolex does not use AR on any of their watches, so there must be a good reason for this.