[drdaeman]

You still have to trust somebody to host your VPN endpoint.

(Although, it's probably less risky to use some relatively obscure VPS/dedicated/colocation ISP than major VPN service which certainly attracts some attention of TLAs)

[borski]

Fair point, but your personal VPN is also a lot less likely to attract scrutiny and be attractive to snooping than PIA. It's just a much bigger surface area, more popular, and potentially has a lot more useful data than your single box.

[floatboth]

Also, public VPN services like PIA mix the traffic, i.e. multiple VPN users' traffic is coming from one IP address.