Welcome to the club.
I don't use the foot brake at all. For one thing, when you come to a stop, how would you get your foot off the brake pedal and onto the ground before you fall over? (I know, just lean to the left. But that's not always the best way to go.)
Also, in a quick stop situation, it seems that it would take longer to get the foot up over the pedal than to actuate the hand brake levers. For me, riding with my foot always on the pedal would just be inviting a leg cramp.
If having a foot brake were any kind of an actual advantage, they would also be on the BVs and Vespas, right? Obviously they are only there so Europeans can ride on their car license.
Anyway, I'm glad you are adapting to, and enjoying, your new ride.