Thats always the, excuse my french, bullshit reaction i see here and is ignoring several important facts:
1. Since you share your vpn exit IP with several users, sometimes hundreds, it becomes harder for any website or service you use to track you by IP alone.
2. My ISP is mandated by law to save all my browsing data (germany here, this law changes every two month but you can assume they all log anyway). My VPN Provider is not mandated and has at least some incentive to not log any data. Cost and Reputation beeing the main ones.
3. I can for example have all my torrents exit in a country where filesharing is not illegal, making any persecution much less likely, same for other laws that are not the same everywhere.
Yes it increases the $$$ barrier to get you, but when your this level of criminal where they make custom 0days just for you, it's doubtful they would find subpoenaing the VPN providers to find out which customer they are much of a barrier too. Many paid VPN providers in the past have also shown no problem secretly selling out their customers too.
That is why I say rotating botnet, because there is nobody to subpoena and it would require even more $$$. When your that level of criminal, might as well go all the way.
