It depends on us if how can we handle our bitcoin. There's a lot of illegal activities that can offer to us. We must have self discipline on handling our money like bitcoin here. Some gambling site offers to get more and to earn bitcoins. Note to yourself! Use your bitcoin properly and legit.
Indeed there is offered a lot for the bitcoin in the deepweb as a example, its untraceable and that is what people like these days.
It's good not to be trace with our online transaction although we are not making something illegal, that is what you called privacy and the freedom to do any transaction online without the need to comply with the laws of the government. Using it for illegal activities would only harm us in the future when we get caught so instead of thinking that way let's be more productive and work hard than doing a one time big time transaction.