Safari has this as well. I've taken to using private mode for just about everything, mostly because I click on so many random links to Amazon, and Amazon is so aggressive about trying to sell you things you've clicked while logged in.

Same here. More specifically, I keep my general browsing history , and YouTube history more relevant by opening random / "lol" content in a private tab.

That way the omnibar suggestions show me content that I'm more likely to revisit and doesn't get clogged up with random results I don't care about; and YouTube gives me more interesting recommendations.

I don’t know. I can see it being a feature both ways. As always, the balance between usability and security.

Keep in mind the algorithms for session management are complicated and a session might persist past when you thought it would.

It's a private browser window, not a private browser tab.