It seems unreasonable to assume that it doesn't exist, and this is all a huge conspiracy among all the police worldwide.

I don't really think it doesn't exist. However, I will not stop saying that I do, because, from the standpoint of logic, it can perfectly be modelled like it didn't.

Take into account what ground we're in...

First, you have police forces naming all kp as "abuse" pics and vids. Clearly it is not so, and one need not have watched it actually, because there is enough data about pre-Prohibition material still around, which alone disproves this.

Second, you have claims from cops and antis alike that it's a 20bn dollar industry, a claim for which I've never seen any kind of proof - such a large amount of money would leave traces, which are nowhere to be found.

So I do think that cops are lying on those two accounts.

And then, third, it is illegal to look for or get or preserve the evidence that would prove this wrong (or right). So that guarantees that the truth is never known.

Because of the above three factors, especially the third, I will continue saying that I don't think kp exists.

Because it puts the burden on those who make outrageous claims to prove them, not on me to disprove them when they tie my hands regarding evidence.