Same here! It started with the Piston 3 IEM and then on to earbuds after I tried the Monk+ (both long-since retired). I ventured out into larger forms for a while but I'm back to stay with buds.
I had bought some Beyerdynamic DT-831 headphones in 2001 or 2002, to use with the PA system at Church, and to provide isolated TV listening for my Dad (when my parents were visiting).
When I modified my A/V & PC audio setup in the Summer of 2016, I bought a iFi Micro iDSD to drive my headphones, and provide Line Out for some small powered Monitors and a Subwoofer.
Then, I started with all of the other portable audio stuff, in the Fall of 2016.