Security and privacy is not the same.

You can use VPNs for privacy reasons, and in such case, it makes sense if you pay in a private way.

Otherwise you leak personal data to your VPN providers. And if you want to stay private, it is better to stay private even in front of your VPN provider. Better providers allows it. 

 I mean, the options is nice, i just wanted to understand the reason underneath. 
I guess there’s no use for me since I download the app from the appstore anyway.