I use cracked apps to determine what apps to buy, as a "trial" per se. I don't care if people call me "scum" because I do that, I do it because i don't want to blindly buy an app and throw my money away if it's a ripoff.
Computer apps offer fully functional trials, which many of us use to make our decision whether or not to buy.
To answer your question, I probably won't stop buying (after trying). I've set myself a monthly limit for iPad apps and an initial one of $75-$100. If the apps satisfy me after use during a day or two, I'll buy it from the App Store and support the developer. If I don't like the app after using it for a day or two, then I won't buy it, that's my philosophy, and I'm perfectly okay with it. 🙂
Hoping some more killer apps will be coming out soon, apps like Penultimate, which are MADE for iPad, and not simply iPhone ports.