It's most pirated because it was great quality product with low quality service and delivery.
While I have technically participated in copyright infringement (I haven't raided any ships, I promise, arrgh), I do not feel I have done anything morally wrong.
I'm not sure there's any caselaw on downloading content you've paid for? Seems very close to format/time shifting to me.
Possibly depends if you leeched or not.
I once torrented an episode of the show The Americans, my last option as my usual sources were weirdly all offline and it was the middle of a season, the show wasn't even legally distributed in Germany at the time.
Turned out some German publisher picked up the distribution rights to the show and their first action wasn't to make it legally available in Germany, but trying to profit from Germans who followed the show trough piracy by sending out serial c&d letters demanding 800€ payments and stipulating damages in the range of 10k€
It's a pretty wide-spread and annoying situation to such a degree that using public torrent is a very quick way to get expensive mail as there's a whole lot of anti-piracy outfits in Germany that monitor public torrent trackers for German IPs downloading files named after copyrighted works to send out those c&d letters.
Afaik the worst they could do is cancel your service/subscription because the c&d letter is addressed to the owner of the connection, which in your case would be the VPN company.