Thats where you are wrong, it's not wasting my money at all, if I buy something it's because it suits what I'm going to be use it for. I don't understand how you have such trouble comprehending it.
I bought an apple computer because of the constant trouble I had with windows OS. Wether you like it or not, I had issue after niggle after issue with all my windows machines - to the point where it affected my productivity with it, and my whole family can attest to that, as well as my girlfriend. Don't think that you know better than that, because that would be extremely arrogant. Make no assumptions for situations in which you do not know.
I don't actually need to justify all this to you, because no matter what I say you'll just brush it off as me not being able to use computers, or using the wrong ones, or not setting them up properly etc etc, all of which would be false assumptions.