I've missed plenty of calls because I was in the shower or washing dishes and couldn't get my hands dry enough quickly enough to pick up the phone. I've also missed calls intentionally because I didn't want to take my gloves off in below-zero-Fahrenheit weather just to answer a call, and I couldn't answer a call with my gloves on.
I do wish smartphones phones came with a fallback "answer call" feature that didn't rely on the touchscreen being able to recognize your finger. I can answer a call on a flip phone with just my teeth.
If you can sneak up on it without triggering the proximity sensor I find pecking the screen with my nose works. If it's not wet & runny...
I'll be skipping this Jolla iteration and I am sad b/c a 2nd is looking doubtful. When my N900 dies I'll be going retro w/ my flip-phone, until an open device with physical keyboard, larger screen and isn't designed to spy on me 24/7 comes around.
I do wish smartphones phones came with a fallback "answer call" feature that didn't rely on the touchscreen being able to recognize your finger. I can answer a call on a flip phone with just my teeth.