>>4153736If you have friends, they're fun to pull out at parties and group outings. People are a lot more willing to do dumb shit (silly poses, props, stunts, tits out) on these than they are for phone/camera photos. It's the same with photobooths, but you don't have to lug a huge booth with you.
Spend way too much on the Evo and you can make multiple prints, save images, or print from your phone over bluetooth, although that function is clunky and slow.
Instax print quality is garbage, but they fit easily in a wallet/pocket, are a standard size, and you can get a pack anywhere in a pinch. There are better instant film stocks available, and if you want actual good prints you need to look elsewhere. There are portable printers that will make good prints from phone photos, but I guarantee you won't get the same response from people as you would with a photobooth or an Instax.
TL;DR: Instax is fun if you have friends to do shit with, and useless in literally any other situation.