My parents have recently divorced and I chose to stay with dad. Our family home was quite big, with a yard, patio,… now my dad rents a studio - we have living room, kitchen, bedroom (1 room) + bathroom + balcony. I actually really love it, it’s very cozy, intimate, nicer location, easier to clean, less clutter…
I love being alone and I wouldn’t want a huge place either. I can keep my thermostat at 61°F/16°C all winter in the evenings and stay nice and toasty on my heated mattress pad next to my dogs. It keeps the gas bill to a minimum even in a colder climate in a house with 100-year-old windows.