Of course there's a reason for climbing, and it's global warming. I think. Regardless, the world is flooding, and you don't want any part of that. Sadly though, you're likely to watch the waters rise a few times and will probably get stuck yourself. There's no escape from our fate. The last tip is even more important as the water gets high, because second chances are often difficult to come across as the water level rises, and if you miss the ledge you're grabbing your character will just let go and fall.