The real use for notifications is to sell things or get paid for services in-person without cash. The notification provides certainty that you've been paid, so

The real use for notifications is to sell things or get paid for services in-person without cash. The notification provides certainty that you've been paid, so you can hand over the item/stop hanging around after the service waiting to be paid. Of course, a bank should be able to send you a text on the service of your choice. But they won't.