Logging data costs money, but selling data earns money. Also, if the parent company is known for malware then getting mitm-attacked by your VPN sounds like an actual risk if you have any unencrypted traffic passing through it.

Or encrypted traffic for that matter -- a lot of VPNs install root certs on your OS.

Would you be alright if a VPN profiled and sold your browsing habits, engaging in very traditional, even benign business model similar to what everyone else is (e.g. credit cards, etc) doing -- but with the knack of keeping your real identity strictly anonymous and detached from these activities?

In other words, would you be alright if the VPN built a profile of your VPN identity? The corollary, I think, asks if you're interested in a VPN to separate your activities, or to thoroughly diffuse them for actual information loss.

No. You could associate the two profiles later on