My introduction to D&D was Baldur's Gate back in 1998 I think. From there a guy I worked with at the time was planning on starting up a 2e AD&D game with the intention of switching to 3e once the rules were released. I happily joined up with a bunch of other people I kinda sorta knew from school at the time. I started off as a player but after a while I wanted to DM since we didn't have a 'default' DM at the time, just a couple of different people running one shots. We played 2e VERY regularly (about a year, two years maybe) until 3e came out and then we almost immediately switched to that. I have some pretty fond memories of those 2e games we played even though I thought the rules were not my cup of tea.
During the 3e I became the default DM, and I ran games for the same group pretty much weekly up through 3.5, with new members occasionally joining and others dropping out. Near the tail end of 3.5, some people got married or moved off so our 3.5 games started to dry up. Plus, 4e was announced and no one had any desire to switch after the first bits and pieces were released to the internet.
After a brief dry spell, I read about Pathfinder, got really jazzed to see that Paizo was going to attempt to patch what had become some very noticeable holes in the system. Around that same time, some friends from my previous groups were itching to get a new game going so I of course, obliged and offered to run what were at the time, the Pathfinder beta rules. So I ran a horrid amalgamation of 3e and beta Pathfinder material... in the Forgotten Realms. Some ridiculously broken characters resulted but it was still a lot of fun. I think that game got up to around 15th or 16th level before imploding, mostly due to some members having kids and being unable to commit.
Sometime during this period I ran a very, very short-lived game using the WHFRP rules. It was great. I really liked the rules but I couldn't handle running a math-intensive 3e/PF game and a WH game at the same time especially because I was very new to the WH rules and I was the only one at the table that was familiar with them. I'd really like to run that system again but none of my players have been interested.
The campaign fell apart but after a few months I started up a full Pathfinder game for two of the old players. I think this was around 2011 or 2012. That game lasted about two years I think before finally falling apart because one of the players (half of the 'party') had to go off for 3 months for work training and the other was getting married soon and couldn't commit anymore. It was actually probably a good thing the game fell apart when it did. The players were about 11th or 12th level at that time and Pathfinder was so rules and math intensive that running two characters at that level was worse than running the five players plus the npc in my PF/3e abomination at 15th level. Just too many random modifiers and the characters were just flat out way too powerful. I don't know if that was due to the system or my inability to DM it properly but I was getting pretty fed up with PF at that point.
The PF game collapsed and I went through almost a year long RPG drought until, almost randomly, one of the players from the 3e/PF Forgotten Realms abomination campaign asked if I'd read anything about 5e. I said no then he proceeded to extol its virtues and he asked if I'd be willing to run a 5e game. I said I'd have to read the rules a bit but I'd be interested. I read the rules and I was very impressed how it managed to take some of the good stuff from 4e, mix it up with a rules-lite 3e and somehow end up with something that was almost 2e-ish. I said I'd run the game, we cobbled together a group consisting of half old players and half new players and voila! That's how I got my 5e campaign.
