How long does a Rolex GMT last?

I'm curious to know, how long does a Rolex GMT-Master actually last? I've heard tales of these watches enduring decades of wear and tear, but I'm wondering if there's a specific lifespan or if it truly depends on the wearer's habits and maintenance. Is it a watch that can be passed down through generations, or is it more of a luxury item with a shorter expected lifespan? I'm particularly interested in hearing from those who have owned one for an extended period of time to understand how well the timepiece stands the test of time.