I can come up with a handful of benevolent uses for facial recognition in no time flat.
1.) Automated ID systems for supermarkets. Walk into a store, store knows who you are. No checkout needed. Just walk out.
2.) Security for venues/work/etc. No more backstage passes getting copied - computer vision knows who's allowed where.
3.) Emergency response after a disaster. Automatically notify loved ones if you've been detected alive in a news feed.
4.) Voting systems. Got a stadium full of people? Just have them raise their hands - computer vision does a tally along with ID'ing who voted for what.
5.) Guest lists / ticketing. Show up to a venue, walk in. No ticket needed. Venue knows who's if you're allowed in. No more lost tickets.
6.) FaceID for the iphoneX. I'm personally loving it on mine.
Like many new technologies, it can be used for both good and bad. Harnessing nuclear reactions can be used to generate massive amounts of electricity, or to level cities. What's important is that it's regulated, not that it's banned.