The benefit of doing the repair in the store is thatOn iOS devices, repairs ARE done in the store while you wait. Mac repairs often get done at a repair center - not because of difficulty of repair but because of availability of parts and labor. The primary reason Mac repairs can't be done while you wait is the shear number of parts that would need to be stocked in-store simply doesn't work out favorably. The store could order any necessary parts (3-5 days), or they could mail it to a place that has all the parts and get it repaired and back to you in 3-5 days. Hmm...
1) You can mail parts to the store, but you don't need to overnight parts from the store to a recycling center. In some cases you can probably recycle directly from the store, preventing the environmental impact from shipping completely. This is a big issue for Apple, so it's surprised they aren't doing this already.
2) This would let me keep. using my. computer while Apple gets the. parts in stock, instead of being without acomputer for 3-5 business days because my stupid spacebar is busted. again.