You also have early adopter syndrome where people who know about fragmentation assume you won't support their phone, even if you do, even if you later add support.

Oh, $app? I heard about $app but it didn't support my phone on launch day, so I ignored them and installed a competitor who works everywhere. Oh, $app added support for my phone 6 months ago? Who cares, I've had $competitor installed for 7 months.