That's your right as a developer. It's also our right as buyers to get discouraged when we pay out for an app that stops getting supported after a few weeks and is incompatible with newer versions of Android. Take bTunes for example.. 10,000+ downloads (it says 10,000-50,000, so for all we know it could be significantly higher) at $2 a pop. I'm not quite sure what happened to the dev but I was pretty disappointed when he just disappeared, never to update the app again. Either way, I'm sure the dev made off with quite a lot of cash. I'm not saying that this applies to your case. All I'm trying to say is, it's likely that people can get discouraged from supporting devs if they have bought apps in the past that are no longer supported. Either way, as I've already stated, it might make sense for 100 people to buy a lot of Android apps at a few dollars, for every person it does not make sense for. But still, it comes down to the individual person and that's my choice as a consumer

While I don't deny you make good-quality apps, not every $2-$3 app is very good anyways. And about your donate version of your app, I am sorry so many people asked for a refund, I do not believe that is right. I am in no way condoning people paying for a donate version of an app, and then asking for a refund. I am simply emphasizing my right to abstain from purchasing apps that I do not think will be worthwhile for me, in my situation.