As I told some of the kids that used to work for me, if you think you'll be missed when you retire, quit, whatever. Just imagine a bucket of water with your finger in it, then pull your finger straight up and see what happens. That's how much affect your leaving will have on anything, a very small ripple and you're gone. Replaced before you know it, a few people will tell a story or two about you, then you're forgotten all together. If you think you're anything more than that, you're kidding yourself.
No
When the idiots and refugees chase away the industry people and SMEs they aren’t replaced.