You might like Tab Session Manager, which also lets you tag and search your saved window/tab sessions and annotates them with a date.
Nah, my point is that having tons of tabs open literally clouds my mind, like being in a messy room. Closing the tabs feels like I'm tidying up. History exists so that I can still go back to a tab if I really need it, which makes it less "scary" to simply start from a clean slate.
At some point it can get up to a few gigs and need pruning. But knowing you can just close a window with 50+ tabs and not loose anything is super cool