This is a really myopic view on uses of crypto and the BitTorrent protocol. There's so much more going on than criminal applications.
BitTorrent is used in a lot of settings for data distribution and for software distribution. Saying it's just for pirating reveals the author's laziness. Several of these use-cases are listed in the wikipedia page: https://en.wikipedia.org/wiki/BitTorrent
As for crypto, I recommend people read about Bitcoin being used for the purposes of sending remittances to start.
BitTorrent is used in a lot of settings for data distribution and for software distribution. Saying it's just for pirating reveals the author's laziness. Several of these use-cases are listed in the wikipedia page: https://en.wikipedia.org/wiki/BitTorrent
As for crypto, I recommend people read about Bitcoin being used for the purposes of sending remittances to start.