But users choose their own OS/themes, or at a minimum they get used to one particular one that was chosen for them.
I think computer people really underestimate how much the average user values consistency and predictability, and how much they hate change. There's no other tool we ask humans to use that looks and acts completely differently every 2-5 years.
Edit: Actually, on thinking about this, computer people also value consistency: How would you like it if all your vim keybindings were changed? They just don't extend that courtesy to their users.
I think computer people really underestimate how much the average user values consistency and predictability, and how much they hate change. There's no other tool we ask humans to use that looks and acts completely differently every 2-5 years.
Edit: Actually, on thinking about this, computer people also value consistency: How would you like it if all your vim keybindings were changed? They just don't extend that courtesy to their users.