And you are not alone. There is a lot of talent and money currently not flowing into the Bitcoin economy due to such concerns. Today, it is the wild west. If you want to make Bitcoin a currency mainstream users feel comfortable with, there must be some possibilities to track down severe criminals. What if Bitcoin becomes the first choice for ransom? After the third time you read a headline like "kidnappers demand 10'000 BTC ransom to release 5-year old Alice", you will start to doubt whether you still want your friends and relatives to think of you as the "bitcoin-guy". What will happen sooner or later is that someone opens a database of stolen Bitcoins. Once it becomes relatively easy to verify whether a Bitcoin was stolen or not, legal pressure will form on exchanges and merchants to not accept them. In most countries, knowingly handling stolen goods is a crime. So step by step, we will get those blacklists in one form or another. And it is better to get them sooner and in a way we can shape - than to passively watch them appear.

To conclude: I'm with Mike on this.