Every time I go out, I do a little something. If I don't do anything, I feel HORRIBLE the entire time. I really struggle with a negative internal monologue, so having at least one thing I'm proud of or feel cute about helps a lot with that. I really like my eyes, so I just got good at doing a little liner so I can at least like that about me.
Edit: I completely misunderstood the question. At home I don't really doll up, but if I'm gonna be anywhere near a mirror or have anything close to a personal interaction, I'm gonna at least be presentable (in my own eyes, so like light eyeliner and something halfway cute, clothing-wise).