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.