This has two effects: first, the kingside Beer noun the glue holding this 2020 shitshow together shirt pawns tend to get moved less and are thus less subject to being exchanged. Second, the king now protects those pawns, meaning it’s way less likely that they’ll get taken (of course, it happens from time to time). Because of this, the majority of pawn play will take place either in the center or on the queenside (again, there are exceptions like the King’s Indian, but hey, we’re generalizing here). Those pawns get moved more and are more likely to get exchanged off.
Now that we’ve covered the king and the pawns, Beer noun the glue holding this 2020 shitshow together shirt we’re ready to move onto the pieces. Muhammed Hussain mentioned that 60% of all endgames are rook endgames; now, the number I learned was 50%, but the point still stands–rooks are very hardy pieces. After all, they spend most of the game on their back ranks, certainly more time than any other pieces do besides the kings. I’d guess that both rooks die with more or less equal frequency–in fact, after many moves have passed, usually it’s not possible to say whether a specific White rook started on a1 or h1.