‘It just seems wasteful’: I bought a 3,000-square-foot house at a 3% interest rate. It’s too big. Do I sell?

Dear Big Move, 

I’m a 29-year-old woman who purchased my home in a small town in Illinois two years ago. I was shocked at the time to even qualify as I am the first homeowner in my family. I went big, and the house is 3,000 square feet. I make six figures, and can afford the home. My mortgage is $1,200 a month with…