FWIW I was similarly skeptical. As others have mentioned, swiping up becomes a very natural motion. And I have sweaty fingers that confounded the fingerprint reader, so Face ID was actually a huge improvement in recognition rates for me. Looking squarely at the phone becomes second nature (because what else are your neck and wrist muscles doing?), and the only times I need to type a passcode are when I need to unlock the phone while lying down.