I've noticed that people on YouTube and even on TV would sometimes say things like "I used to take lots of coke a few years ago" or "I used to smoke weed daily until this and that" or "Yea, I smoke weed every once in a while," or "I used to pirate games a lot when I was a bit younger" or "I used pirated Windows and Photoshop until I got a job," etc., etc..
Basically they are confessing to a crime, on public record, couldn't anyone come after them? They've already confessed - technically all that would have to be done is a trial.
In these cases: possession of coke, weed, pirating games and software. In some cases - admittance that they will do it again soon - smoke weed ("I smoke it once in a while").
I just keep wondering every time I hear or read it... I thought finally it's time to ask people who know what they're talking about and who may be able to satisfy my curiosity and help me understand.
Hope the tags are right.