21" iMac vs. 27" iMac

[QCassidy352]

Because they haven't changed the form factor yet and the space for a 3.5" drive is still there. Plus some people do want a lot more space than is affordable in SSDs.

Unless SSD prices keep climbing, this will likely be the last iMac with the option for a spinning drive. Next up: a notebook-thin iMac, with almost no bezels except for a vestigial trademark chin.

I hope you're right, but I imagine the fusion drives will persist as standard at least one more generation (maybe you meant spinner-only, but fusion drives do in fact include spinners). Apple just seems intent on dragging this out for no reason that I can really see. You could say it's to save a few bucks, but the $1000 MacBook Air has been SSD-only since what, 2009 or something? And as of the "trash can" mac pro in 2013 every other mac except the mini (and the vestigial classic 13" MacBook pro, while it was sold) was SSD-only!