When you start doing something you love for a living that's when the fun can start to go out of it.
Not for me it hasn't. Or for any other pilot I know. I miss my job when I go on holiday - how sad is that? Yes, I know I've only been doing it a year and am still full of the joys of spring, but I fly regularly with a couple of skippers who started out when I was in nappies, and they still love it as well.
It gets under your skin, this game.