Great for you! I feel exactly the opposite, I feel trapped in my house, super-ecstatic that the kids are finally in school now and can't wait for the office to open.
Here in Sydney, Australia, both office and WFH are available at my work. I'll have anywhere between 0% and 90% of my team in the office depending on the day or week.
In my experience, even being the only one in the office is a thousand times better than WFH.
Whether teammates are WFH affects me less than whether I'm WFH.