Like I said, other solutions won't have any doubts regarding loopholes . I wouldn't touch any currency utilizing zero knowledge proofs with a ten foot pole.
If you dont understand something and if your scared, dont blame it on the technology. This is your fault after all.
Ok, as an example let's consider ring signatures. A solution that provides cryptographically guaranteed anonymity without the risk of keys that can create unlimited coins. Who in their right mind would prefer Zerocoin/Zerocash? Let's use a gas tank in a car as an analogy. Would you prefer a gas tank that has a hole, which has a metal plate welded over it, or one without any hole to begin with? The metal plate should theoretically prevent leaks, but who would choose it over a tank with no hole to begin with?
Valid arguments

The risk of creating unlimited coins exist aslong its not properly implemented or there is a failure @ creating the RSA UFO. I wouldnt prefer zerocash because its centralized and those ppl can create unlimited coins w/o proof they did, which unlike in Zerocoin isnt the case.
Only after its implemented and tested we will know more about this, otherwise it will be only theoretical. Nobody said you have to buy ANC and use ZC. If you/we/whoever isnt willing learn from mistakes and dares to make mistakes, then we all would get really really stupid.
Good to see some well done criticism!