I used to use tab groups and have hundreds of tabs in Firefox some years back. Now, like you, I close things as soon as I don't need them. Anything unpinned is

I used to use tab groups and have hundreds of tabs in Firefox some years back. Now, like you, I close things as soon as I don't need them. Anything unpinned is temporary, and I only pin a few tabs. I also heavily bookmark and quickmark (qutebrowser) things and can usually get back to them easily. I don't remember what changed my behavior, but I had incidents in the past with running out of RAM and swap and my whole PC hanging despite having 16GB of RAM, so I probably just scared myself straight. Things feel cleaner when I have fewer tabs, which I think contributes to my mood being better. If I'm ever partway through a deep-dive or project that involves a lot of open tabs, I find I feel stressed. Sometimes I even decide enough is enough and close them all, feeling near-instant relief.