I’m like you…have never encountered any problems with quitting caffeine. I usually drink 4 12oz cups of coffee a day and can even drink it right before bedtime without having any effects on my sleep habits. I am now 58 years old and coffee has never affected me adversely.I have never had a problem quitting caffeine. I drink 4oz of espresso (100mg caffeine) every morning and on workout days drink the same before training (ttl - 200mg). I have quit many times for a month or two and never have problems. I always go back because honestly I love the taste of the Cuban colada I drink daily. Good luck with our caffeine addiction symptoms.