I used to be totally dismissive of quartz because they seemed to be too easy to produce impressive results, i e a 15 dollar watch would, in terms of performance easily outperform the most expensive mechanical time pieces. It doesn't take much skill by the manufacturer to produce an accurate watch. Furthermore while their time keeping was impressive they became throw away items. No one wants to fix them if they break. I also guess my perception was formed by the fact that the upmarket brands, such as Rolex, don't produce quartz versions, because they can more easily defend themselves against copies with mechanical movements than by producing quartz versions. Too easily copied.
Then I read the book "Electrical Timekeeping" by F. Hope-Jones Chairman of the British Horological Society outlining the hunt for timing accuracy prior to quartz. It's got a nice dedication by Albert Einstein. Worth a read to realize the enormity of the quartz accomplishment.