There exist specialized quartz watches with battery lifes in the 15 years range - I am sure if there was any real demand it would be possible to build a digital

There exist specialized quartz watches with battery lifes in the 15 years range - I am sure if there was any real demand it would be possible to build a digital watch that can survive a century without any service. While I appreciate the craft, let us not pretend the demand for mechanical watches in the modern day is nothing but a luxury vanity driven buy wealthy people with way too much money to spare.