I spend a lot of time in the asknostr hashtag helping folks out. Absolutely one of the most common pain points is figuring out how to both send and receive zaps. Usually, they will have their lightning address in their profile so they can receive, but they haven't yet connected their wallet to be able to send. Or else they are Primal users who set up the integrated wallet on mobile and are wondering where it is on the web, or why they can't use the same balance on another Nostr client, or they forgot to add the lightning address to their profile... The friction of getting set up for both receiving AND sending zaps from the same wallet can be exceptionally frustrating for folks. Meanwhile, NIP-60 eCash wallets can completely alleviate this. Log into a new client? Don't have to set anything up. Your eCash is already loaded and ready for zapping, locked to your npub so it can travel with you from client to client. And even easier for brand new users. The client can add a lightning address for a default mint to their kind 0 profile at the time they onboard and they can immediately send and receive zaps.