*sigh* trackPOINTS. I personally hate trackpoints...
I personally hate trackpads, but check out the Sony P-Series.
It has nothing to do with sandboxes or security models. Nor does this have anything to do with Google not "screening" applications before they go on Market.
This has to do with the fact that the API allows applications to toggle this setting. The decision to expose that can (and should, in my opinion) be scrutinized, but it has nothing to do with security models, sandboxes, or "Apple being better". (To also comment to some other's responses)
A complex system that works is invariably found to have evolved from a simple system that works.