The last straw for me was around 2009. I was in college minoring and interning in media production. Invested pretty heavily in Final Cut, which was long in the tooth, and hoping for better I/O in Macbooks to support better ingest. That was when Apple announced the following:

- Final Cut X. Its first incarnation was a huge slap in the face for features and workflow. They completely cut a large swathe of the rest of Final Cut studio, and knew they were shipping shit with the new pricing.

- The first Unibody Macbook came out. Very little could be upgraded, the keyboard was a leap backward, and all they had for I/O was a half-baked USB3. It's usage for pro video workflows was severely hobbled compared to the last generation.

- Mac OS Lion came out, which was when it started showing signs of user hostility. Power-user features were getting locked down or removed, the app store was being pushed harder, and it was consuming more base resources for the privilege. The tend was clear that advanced users were no longer welcome in Apple land.

These things made me change majors back to computing, and a full return to Linux. I've never regretted that.