DMing:
I started playing Dungeons & Dragons in college in 1976. In 1977 I created my first campaign over Thanksgiving break. It was simply called the World of Arda. It consisted of 3 continents, 6 large islands and 2 moons; all of which were inhabited. I ran this campaign with three different sets of players at least once a week through 2018. 41 Years.
And Now for Something Completely Different:
When I moved to Florida it was necessary to move to a virtual desktop. The World of Arda was too large for this so I have created the World of Nuberin. Roll20 has allowed me to continue playing with my son and close friends some of whom have been playing in my game for more than 25 years.
As a Player:
I have only played in a handful of other D&D campaigns myself and enjoy it tremendously.