Who pays for the computer? How often do you replace computers? I'd expect that carrying a laptop on a bike will shorten its life because of vibration, even if your storage is SSD. The circuit boards have a whole lot of stuff per square meter, and they can crack. I understand they have a few different layers, too. I would carry it on my back if I paid for it and wanted to get maximum life out of it.

I notice laptops don't last as long as desktops. I think moving a computer is hard on it. Laptops that stay on one desk all their lives seem to last a long time.