Actually its 37 years.
I started in June of 1970
I am only 46 so I doubt I am the longest.
I smoked with people yesterday who had been getting high since the mid '60's.
I smoked with my grandfather until he was over 80.
One of my mentors in the Cannabis movement was Pres. Bob Kundert.
He smoked and ate brownies in the nursing home until the day he died.
We smoked at his funeral.