The main problem is that the request to allow notifications pops up the first time you visit a site, at a time when you have no idea yet how much you like and t

The main problem is that the request to allow notifications pops up the first time you visit a site, at a time when you have no idea yet how much you like and trust the site. This leads me to always permanently deny them (because the second and third time I visit the site, I am still unlikely to know them well enough, so the popups would just be annoying). Then, after that, the notifications have been permanently denied, and you don't get a chance to re-enable them anymore. So sites should never ask to enable notifications by default, but instead have an easy-to-find-but-not-too-obnoxious button on the homepage to later enable them. (I don't even know if this is technically possible at the moment.) I would still do this for <1% of sites, but at least the functionality would be useful and usable. A Javascript pop-up div in a corner might be acceptable when you visit the site for the 5th time or so.