Re: No spare?
Could not agree more.
For the price of 1 MacBook these days, you can almost buy 2 Windows laptops. Or 1 good Windows laptop and a basic but decent desktop. I am still surprised many small business owners don't realize this.
You have instant redundancy.
Run Macrium Reflect or Acronis True Image regularly, and you can restore an entire setup instantly to any recent hardware. No reinstallation of anything.
But of course, you'll have to suffer the humiliation of not having an Apple logo on the back of your laptop at Starbucks.