As others already mentioned, there's hobby and beauty to them. But for an actual practical point where mechanical watches outshine their electronic counterpart

As others already mentioned, there's hobby and beauty to them. But for an actual practical point where mechanical watches outshine their electronic counterparts: they can be insanely robust and reliable, as in, working for literal decades, basically non-stop, with generally 21600 mechanical movements per hour. And those are not specifically high-end ones. A decent quality 80$ watch from good stock will last a long time, and with proper maintenance potentially lifetimes.