Two years is a lot of time to devote to any activity you do on a weekly basis.
I've had jobs that have lasted for less than two years.
People get degrees in two years.
At my height of productivity, I'd run a "campaign" in about 3-4 months. Recently I've been doing shorter shots, but I've got a round-robin campaign going pretty strong.
We tend to 18 ro 24 months, sometimes a bit longer. Create a concept, execute the game, let it run its course. On to the next thing. For us, we basically run the story equivalent of between a long novel and a trilogy.
Lately our games would start level 6-10 and run to level 15, sometimes to level 20+. Current campaign we started level 1, partly because we switched to 4E and we are all new to that.
For the few who run much longer games, I'm curious to hear how you pace it and how you keep it going that long. Nothing perjorative intended. I've just never been in a game that has run anywhere near that long and can only guess how you do it, especially for the over 10 year long ones
I wish I could still pull that off. It's been many decades since I could game that regularly. We shoot for every two weeks but fall short of that on average.