Note to Self:
You just wrote your principal explaining why a MacBook is not an absolute necessity. You gave, as your reason, the fact that you own your own laptop running on Linux. Here's the deal: you've gone from liking computers to needing computers to claiming they are absolute necessities. You can live without a laptop. (You've gone this far without owning a cell phone). Absolute necessities are things like food and water and love and coffee.