That's impossible.
No, it's not. It is if the machines had no purpose for me other than BTC, I didn't get epic deals on the hardware, and I was starting from zero balance. I already had a small amount of BTC to start with, and not only that, I already had some of the hardware and with its daily active use doing other things than bitcoin, already consider it paid off. It's perspective, not hard numbers. The *new* hardware I bought I will consider paid off. And again, this is considering worst case projections...things aren't looking quite that bad.
But of course people will argue stupid shit here. Which I'm perfectly fine with actually, there's been some interesting viewpoints brought up because of it. At least you read the post and put some thought to it.