I would be afraid of using it, forgetting I used it, and then using it again, in an endless loop. Other than that, I think society would change tremendously, and with change, specially regarding something as fundamental as memory, comes chaos.

Maybe I’d use it to forget some awkward, embarrassing moments, but I don’t know, I’m not that worried about them since I imagine everyone else has probably forgotten about those by now, I’d be worried that by purposefully forgetting crucial life-changing moments I’d be, like, losing a part of myself.