In the UK, you can use Curve. That gives you a physical or virtual card which proxies your existing Visa / MasterCards (not Amex).
But it doesn't have an NFC app you can use on Android. As far as I can tell, there are no other virtual NFC payment apps.
And, of course, it doesn't really improve your privacy posture. Your bank still knows who you spent with - as does Curve.
If you want a free fiver, you can use my Curve referral link - http://curve.app/join#D4MK9ZKN
Not everyone has the same level of mobility that you do.
Incidentally, do you get off your arse to change the volume on your TV?