Zaps go to your lightning address. You don't need a NIP-05 address to receive zaps.

Having the same address for both your lightning address and NIP-05 address like I do, it's cool looking, ensures the correct person is getting zapped, etc. But, it's just for looks. It's why they're called Vanity Addresses. 😏

The onlynostr.club vanity address I use, it's just simple redirect to my actual lightning address. Click on the link and take a look at how these vanity addresses work.

For instance, to get it to be your lightning and NIP-05 address, select Forward as the node type, and enter https://vipsats.app/.well-known/lnurlp/btcbackpacker to forward payments to your wallet.

Other than that, yeah, it doesn't really matter if you don't have a NIP-05 address. Just looks cool when you use your own domain or a vanity address.