Ruin Explorer
Legend
I still have my 1E & 2E books, and they lived in a backpack being hauled back and forth to school daily. They're still in usable shape.
Really? My 2E PHB fell apart pretty much as described by the OP for their 5E one, after about 4-5 years of AD&D, back in the 1990s. I still have a 2E PHB but it's from one of the players, and saw almost no use. My FRA had to be elaborately mended with book tape and so on, despite vastly lighter use, in the late 1990s.