I have not lost anything. But I recently read information that officially lost about 3 million bitcoins are lost, i.e. in fact, only 14 million of the known 21 million are in circulation. I think they are even more.
Whats the worst thing that could happen anyway,Well, we hate to say this, but there may be a chance that you wont be able to see your old Bitcoin and the funds inside itever again. According to Cane Island Digital Research, about 4% of available Bitcoins are lost each year.