I had cut my teeth back in the day RPing on AOL (hi, we may have played together if you were on AOL between '96 and '02 and were active in those chatrooms. Arts and Entertainment ftw?) but eventually stopped due to some real life stuff but managed to play for about roughly 10 years on AIM/gchat with the same person just to get my fix.
It would not last.
Speed up the timeline to about late 2010, early 2011, where I got into RPing on WoW (hi, we may have played together if you were a WoW RPer on Moonguard or Wyrmrest Accord between 2010 - now). It was a challenge to play on an MMO at first but some great add-ons made it easier. Met a lot of super creative and fun people and a small sample size of those who professionally suck the life out of everything they touch.
In 2012, someone tried to drag me into MUs but I resisted pretty hard and did not really venture forth/put effort in until 2014. Been hanging out since! I love telling collaborative stories and meeting new people even if I am shy as heck.