I have been playing MMO for 18 years now, mostly World of Warcraft, but I have strayed into other titles as well, including Rift and ElderScrolls
early 2004, starting with City of Heroes, then moving onto WoW a year later during the EU launch and stuck with it ever since. The only other MMOs besides WoW that got more than 10 hours of attention from me during that time were STO, SWTOR and ESO.
Started with Meridian 59 in 1998? (I think) and continued with DAOC and (of course) WOW after that
Started playing WoW in November of 2006 (20 years). The free 7-day trial got me hooked.