Daily commute with a laptops for 15 years (various Mac's) Never had an issue. And I have had my share of crashes. I've used messenger bags, backpacks, Panniers (arkel commuter), and lately a Carradice Nelson Long flap saddle bag. My current laptop is a Macbook Air, the thing is SSD and very light.

Don't worry too much about it, seriously. Pad it up a bit in whatever bag you choose and back up your data, that is that is more important than anything.