Job interest not a big predictor of job satisfaction
I've found that, for me, the sweet spot for job interest level is a solid "ehhhhh."I want to be just interested enough in my job that it's easy to stay motivated during working hours. I don't want to be interested enough that I start to get emotionally invested, because then I'm at increased risk of doing things that are bad for my mental health, like letting myself get sucked into design arguments with other emotionally invested colleagues, taking my work home with me, or putting in overtime even when I don't need to.