My volume of flights would not be considered frequent anymore; however, the reason I fly BA is the British hospitality, the typically gracious and elegant BA crews and the general style of the British. Period.
Plus growing up BA was always only good to me (cockpit take-offs and landings, a birthday cake for me at LAX in the then First Lounge, Captain Leo Budd of the JJC meeting up and giving me private tours of Concorde, etc).
I could go on and on why I love BA.