I like trackpads. I'm too clumsy to use a mouse.

I had mice for years and preferred them even with laptops; then sometime in grad school I gave up on the concept entirely, I think simply because they were less paraphernalia and I hated carrying anything unnecessary around. (I consider it a godsend that ratatosk leaves a spare power cord lying around the apartment, because it means I can leave mine at home when I visit derspatchel.) I don't ever think I'll want the ability to turn over windows like animated pages, but I've adapted remarkably to the scrolling option.