I almost NEVER wear sweatshirts anymore. I like sweaters. I love cardigans because then I can easily take it off or on depending on what I'm doing. My winter staple wardrobe is pants, a white tshirt and a cardigan sweater.
I prefer sweaters but must confess to wearing hoodies or the microfiber type jackets more around here for running around doing errands - they are easier to wash. I do have a few cardigans I will wear around the house and I used wear sweaters almost daily when I worked outside of the house.