I followed the inevitable route almost 20 years ago - I think I kept my licence for 2 or 3 years as I didn't have the inclination to spand all of my beer money on AVGAS. Some 15 years later I went back having promised that I would only do it if I could manage something more than the legal minimum and the monthly "within one hour of the aerodrome" flight.
I am now very lucky, I can afford more, I have a share in a good quality tourer that is invariably available and I often use it for business trips. Will I get bored? Maybe. However, I am now able to diversify (taildraggers, IMC, night, aeros etc) and I guess this will keep me interested.