When an optical drive fails, the consumer (or Apple) can choose to fix it.
When there is no optical drive at all, the consumer is simply S.O.L. for the entire life of the product.
How the heck is the latter scenario - in which the consumer receives more features and choices - worse for the consumer?
When I see changes like this, I think back to my first iMac and the lack of a floppy drive. I was upset and thought it silly not to include one, but I've never used a floppy disk since. I imagine this change will be much the same.