When I was young and had my own apartment I occasionally longed for a roommate, but was mostly content to have the place to myself. Now that I'm married with kids my husband and I do our best to give each other child-free time out of the house, but we've only recently tried to incorporate the opposite—giving each other time at home completely alone.
Family time or roommate time (depending on your roommates!) at home is valuable but don't underestimate the restorative power of being home all by your lonesome. Unlike when you leave the house, you can be completely "off" at home. Wear what you want. Do what you want. Listen to what you want. Watch what you want. Cook what you want. Eat what you want. Do absolutely nothing if you want.
One of my favorite things to do when I'm home alone is clean. Not because I love to clean, I certainly don't, but I can blast music (the tracks my husband hates) and run around doing my thing. I equally love doing nothing when I'm home alone. And by nothing I mean truly nothing—lying on the sofa, letting my mind wander and soaking up the silence.
If you're not getting enough "me time" at home, consider asking for it from a partner or roommate. Trade off time whenever you can and enjoy the benefits.