I was recently given a pixel 3 XL, I tried so hard to get on with it but the fingerprint sensor on the back ruined it for me (and google pay on london buses is embarrassingly slow).
having the sensor on the back means you cant quickly access your phone when its sat on your desk without picking it up. its such a small thing but it made a big difference. Plus unlocking it out and about was all sorts of precarious finger gymnastics.