I was a fan of Apple products (in the late PowerPC days), but eventually gave up on them after countless of small roadblocks caused by their business practices. I told myself I'd never vote for them with my wallet again.

On of the issues I remember at the time was their refusal to have Sun releasing JVM updates for Apple's platform, while simultaneously not keeping it up to date themselves. As a CS student with a curriculum using Java as a teaching platform, that's pretty annoying.