I don't. Practically everyone around me has one. If you need a watch, get it. I have no need for a wristwatch, same as I feel I don't need an iPhone.That may change in the near future. Primary reason is that I use a cellphone only for talking, nothing else, and using a Tracfone is super cheap, no subscription. No iPhone means can't get an Apple Watch. Will have to observe it in use on other people I know.
If those watches of yours from the 70’s were better brand names in precious metals or even a quality dive watch in stainless, and you’ve kept them in excellent condition, you might just be shocked at what they’d fetch. Not just Rolex, Patek Phillipe or Piaget, either.