Google just released a product that is aimed directly at this opportunity: Google Clips. You don't wear it on your face, so it's a little different, but it's clearly designed for hands free use by parents, and it should be a little easier to get the videos out and onto whatever service you prefer.
Yes! I'll be interested to see the reaction to it. Having to carry it around and clip it to things feels a little unwieldy, and no audio is an odd restriction, but the idea of smartly detecting clips worth keeping is absolutely fascinating. And the whole thing shows exactly the kind of parent-focused design Snapchat obviously doesn't do.
https://store.google.com/product/google_clips