3 pinned, and usually an extra 6-8 in any given tab group; I think I currently have about 8 tab groups on the go. I have essentially chained myself to Firefox's excellent tab-managing capabilities--so much so that I am unable to bring myself to use Chrome, no matter how much I appreciate the way it handles everything else. Sad stuff.
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This is your new existence. This is the new you. Welcome to the Wasteland. It will be your undoing.