Three big and important reasons: 1. What the dev themselves use. I don't want to use an app that the dev doesn't use daily. 2. What the development experience

Three big and important reasons: 1. What the dev themselves use. I don't want to use an app that the dev doesn't use daily. 2. What the development experience is like (tooling and API) 3. If you wish to monetize your app at all, iOS users spend disproportionately more. It's not about % of devices so much as it is about % paying users. (Same idea for the % of the target market, how many music festival goers use iOS?)