Funny. A year-old topic, not very popular, but it has never died.
So, my first PnP experience was 33 years ago, in 1987, and I hated it. DnD 1st ed. I played a Paladin (because my DM said it was the closest to a knight and I had just read a book about king Arthur and the Round Table).
The year after, I player MERP and I loved it, bought the game myself, bought Rolemaster once my characters hit level 10 (MERP was limited to 10th level characters, and was a simplified version of Rolemaster). At that time, I played by myself, being both GM and the players. I created hundreds of characters with their history, and began imagining a world for them. I even begun a novel that was pretty bad.
In the following years, I bought Runequest, tried Stormbringer, played once in a homebrew system and world by some guy, tried Paranoia, ADnD 2nd, and a few others, sometimes as GM, sometimes as a player, created new classes for ADnD adapted from novels and games that I played. In '94, I settled with a group of friends and we played a game they had built themselves for some years, and also some Pendragon, Star Wars, the Black Eye, Shadowrun, Rifts and Palladium. I also unearthed my old homebrewed world and adapted it to different systems (Homebrew, Runequest, ADnD 2nd).
In 2000, we began playing D&D 3e, and we all loved it. So we mostly kept to it, began playing in the Forgotten Realms.
When DnD went on through the 4th and 5th editions, we did not follow because we did not like the changes. I also brought new players in to replace those that cannot play anymore, so in recent years, when we play in the FR, I have been the only GM, and I asked the players if they wanted to try Pathfinder. After one or two years, they accepted, so we’ve only been playing Pathfinder for about two years, with me as GM. However, we don’t play much, some have kids, others have a lot of work or other activities. At most, we play once a month. Sometimes, we cannot play for 6 months.
So, well, Pathfinder is still quite new to me, and I’m the only one really into it in my group.