That's true, but you can hope they don't keep logs, or hope they don't know your identity.

They don't. They can link your IP to your identity and they might be able to collect DNS queries. Nothing more realistically.

They do hide your "real" IP address from other peers when using BitTorrent, such that angry letters from copyright holders go to the VPN instead of your ISP. The assumption is that your ISP would be more likely to snitch on you when compared to a reputable VPN.

The only change I make is rebinding mod+num keys to switch to a specific workspace instead of a specific application. It makes a lot more sense.