Beginning - nothing new to add here. I began writing my own games when I needed a game of “mine” to stand out from the other Referees at the Nottingham University group. So I bought Superhero 2044. When I was thrown out of Nottingham University and moved to playing with the Birmingham University group I tried running S’44 and they savaged it - especially a guy called Pete Haines. But, bless ‘em, their savage feedback on the game showed me what they wanted - to start off as SUPERheroes, basically - so I was able to do a quick “hack” of Gamma World. They loved it and, over the next few months, Golden Heroes developed.
I started going to conventions in the 21st century when my (now) wife said “You know that game you write?” (Squadron UK, 1st Ed, the illegal GH retroclone) “You need to go out and promote it - look there’s a convention on in Birmingham this weekend - why don’t you go to that?” (UK Games Expo.)