But this isn't wrong, it's just your entirely subjective personal preference being different to someone else's.

Personally, I don't like it when browsers implicitly keep tracking things when I close the application and then fire up some half-baked version of the same stuff when I come back later. If I want to remember where I am, I can easily bookmark some or all of my tabs.

Firefox has had a particular problem in recent versions where it seems to think it crashed on the previous shutdown, even though there was no user-visible evidence of this, and then tries to restore the previous session even when it otherwise wouldn't. That's not helpful if your previous session involved shopping for surprise Christmas presents for the SO who is now standing behind you as you open the browser again several hours later for some entirely unrelated purpose, in a totally hypothetical example.