UX problems with base layer payments include:

- Mining fees are sometimes high

- Confirmations usually take several minutes

- Using it privately requires running a coinjoin server

UX problems with lightning payments include:

- Setup fees are sometimes high

- Payments frequently fail

- Payments aren't asynchronous (the recipient has to stand there with their device open waiting to do a revoke_and_ack on their old state -- unless they use a custodian)

- Payments that *do* succeed occasionally take more than 30 seconds (due to stuck payments, automatic retries, and no ability to say "stop retrying" in any existing wallets that I'm aware of)

- Using it privately requires manual channel management