I agree as well, running through creeks, puddles, or even melting snow sludge without a care can be so liberating and enjoyable.

Or like last week, I went for a run shortly after a rain, and parts of my chosen route were through tall grass and bushes which obscured the path to knee height. My legs had to push through the growth, and all the water on the stalks ended on my knees and shins, leaked down towards the socks and eventually into the shoe. Within five minutes, my feet were as wet as if I had dipped them under water directly, making wet sounds with every step. No waterproof shoe design would be able to protect against that! :)

Years ago, I read somewhere that professional trail runners, when choosing shoes, do not look at how waterproof they are, but rather how well the water flows out of them.