I use it mostly to onboard merchants. Helping them, to start accepting BTC in their shop. LNbits can be used for many use cases, is one of that cover a broader panel of usage. Testing it a lot, I end up writing a lot of guides and also the documentation wiki for LNbits.
And many more... the 30+ LNbits extensions offer a large number of use cases. LNbits is exactly like a Wordpress for your node. You can use it for many things.