This is exactly my thought. Why make every website specify `system-ui` to look nice? Why not just make it the default? I'm struggling why we need system-ui, ui-

This is exactly my thought. Why make every website specify `system-ui` to look nice? Why not just make it the default? I'm struggling why we need system-ui, ui-serif, ui-sans-serif... When we already have initial, serif, sans-serif...