I did the math during COVID. I was putting in about 30% more hours when I had to go to an office, and all of them were unproductive. I wasn't being paid any extra to do that - which was especially unfair since I also had additional wear and tear on the car, lunches out, fancier clothes to buy, etc.
I may go back to the office someday if I'm forced to, but I won't do it for free. Companies need to compensate in office employees not just for the extra work, but for the expense.
Now I use some of those extra hours for the company, and some to work on my side projects. It's glorious. I'm both more productive at work and happier than I've ever been. I also don't get sick when all the cube-dwellers do a few times per year.