… had to switch to my back-up computer when my primary died.
It’s important to back up your data – if you’re not, shame on you and I recommend Carbonite. But that’s only fuel. You still need an engine (i.e. a working computer) to be in business.
For a few hundred dollars, you can pick up a desktop machine “just in case.”
Then, if your primary computer is ever lost, stolen, sick or being used by your 14-year-old son Jonathan to upload a video of himself, you won’t miss a beat.