Being comfortable is over-rated.
I could be the driver - the Uber guy saying, "I used to be in films years ago... ."
I'm so glad for the dozens of times I haven't listened along the way.
You always want to quit while you are ahead. You don't want to be like a fighter who stays too long in the ring until you're not performing at your best.
Every story has its demands.
I always like to try different things, different genres; stories that have a dramatic element and can generate conflict which I find appealing; where the characters have to overcome obstacles. That kind of thing is challenging.