Lottery is an opportunity. Betting on horse races is an opportunity. Paying a visit to your local casino may be an opportunity. ZCoin isn't an "opportunity", it's one of the most advanced cryptocurrencies ever released, built upon rock-solid technology. Did you read the Zerocoin protocol whitepaper? Do you even know what a zero-knowledge proof is?  All I can see here it's a vocal minority of minus habens spreading FUD and misinformation that don't have the foggiest idea of all the benefits that truly anonymous cryptocurrencies can bring to everybody.