If you’re working at home on weekends, it doesn’t sound like you’re leaving work at work.

I liked working from home at first, but after so long it becomes harder and harder to leave your work at “work” when your workplace is also your home

That sounds like a “you” problem. I just hit the shutdown button on my laptop at 17:00 and close the lid, and boom I’ve left work and magically instantaneously transported to my home.

the flexibility to work from home on weekends

Work … on … weekends?

I think your problem is that you’re a workaholic.

You are just a rare exception. Don’t push it on the rest of us

Simple solution is to have a designated home office work space, and work only there.