Ceramic bearings: What's the point?

I had the option of ceramic or standard when I got my crankset- I think ceramic added another £70, which given how expensive the cranks where was pretty much a non-issue.

I went for standard bearings however, due to lots of reports of the ceramics needing to be replaced after 1-2 months use.

Sounds like bad design.

If you spray WD40 into your stainless bearings. They will spin more freely, untill they prematurely die. At which point you repeat with new bearings. You can replace a lot of non-and SS bearins for the cost ceramic. There is simply no economic arguement for ceramic.