When you use a VPN, you merely send all your traffic through your ISP to another entity, and that entity gets to see all your traffic.

I've always assumed 95% of VPN services are 3 letter honeypots. I refuse to use. 

 No they don’t. Your ISP doesn’t get to decrypt https packets. That’s not how the internet works. At most they see the domain name, but none of the personal details like the website suggests.