enthusiast29
Level I
We will know the source of purchase and additionally who purchased it. We can also be sure that the device is not stolen. Buyer could ask for a clean, unedited copy of the bill before paying in full, this would minimize the chance of a scam too.And how does that rules helps?
Finally, you said the words that an invoice is not needed when claiming warranty. What if the N-th buyer of the device is asked for an invoice by some hot-headed crazy person at the service center? Will you come forward to help them getting warranty service without an invoice? I'm pretty sure nobody's gonna bat an eye then.
So please don't question the rules of the forum, they're there for a reason.