if there be any impediment to this laptop, speak now

My five-year-old MacBook is showing its age. Does anyone have a compelling reason they'd like to share with me that I should *not* replace it with an "old style" MacBook Pro? (No Retina, hard disk what actually spins around, built in cd/dvd drive.) I covet the 1TB disk and am not quite ready to go driveless yet, but if someone wanted to make a case for why I should reconsider the MacBook Air (or something else), I'd be curious to hear it before I put money down.

(And yes, I am wealthy and lucky in being able to just buy whatever laptop I decide will work best.)