THIS. Yes, you can buy a Rolex today and give it to your kid or grandkid when you die and it will keep working without ever having to open the case. And when will that be when you die? 20 years? 50 years? 80 years? Will anyone still wear traditional watches? Will your kid even want the thing?
20 years ago I would have said yes - everyone WILL be wearing traditional watches for the next 100 years, it'll hold it's value and maybe be worth even more when my kid gets it. But now, I have my doubts. Look at how much has changed since 1995. Think about how much more will change in the next 20 years. Hopefully those expensive watches won't lose their value, but I don't think they'll get anywhere near the amount of wrist time that they get now.
I'm not one of those people who believe the AW will kill the watch industry - I don't. But I do believe that as time marches on and technical advances are made, we are only going to become more dependent on devices and the wrist is an easy and traditional place to keep a small device that tells you what you need to know. I'm not sure anymore that a $20k watch is a good investment, or even a $10k watch, unless it's really something special. I mean, sure, if you're personally going to get $10k or $20k of enjoyment out of it, then yeah, it's worth it, but if you're truly "investing" for the future, for long-term "value", not so much.