I'm still on my first BAPP Amex and my first BMI Amex (now Diamond Club). I've had two Amex Gold (both since cancelled), two Amex SPG (both since cancelled) and one Amex Platinum (cancelled). I've also got the still active AA cards sitting in a drawer somewhere. I've had the BAPP for 10 years and got the BMI card a few years later. The others have been taken out and cancelled over the past 6 years, so I'd not say I'm a mass churner.