Agreed with bc22 on the above. I began using a VPN about two years ago, after my South Florida TV/Internet provider sent me a DMCA notice about a current, premium-channel show.
The trend is toward Internet / wi-fi providers cooperating with content providers. And for now, the emphasis on "true" enforcement (litigation) seems to be shifted primarily toward public site trackers, although ones like TPB are quite adept at changing addresses, countries of origin, etc.
When your Internet company begins compliance, and if you use public trackers, it will only be a matter of time before you torrent a new TV series or studio movie that is being closely monitored by its creators or distributors, and a DMCA complaint is made.
Your provider sees you have been active and is likely to give you a warning, and I've heard that some will allow from 3 to 6 strikes before they terminate your service -- but you certainly don't want that. And will the torrent violations of terminated accounts be shared with the most aggressive content providers? Perhaps not now, not yet, but...?
So, you can either wait until your first DMCA notice, or more wisely, purchase a VPN soon. The faster VPNs, with more anonymizing locations/countries, are usually more costly. That's life. Make sure to read several independent reviews before you choose one.
I've never had a regulatory issue here at our beloved GTRU, but on those public sites, I'm much happier with the peace of mind a VPN provides.