I insist on slippers. I tend to bang my toes or, even worse, catch my toenails on all kinds of protrusions (from stairs to skirting boards). I run a lot, so I keep my toenails very short, but it happens quite often, and slippers are the best way to prevent it.
I watched a video on Youtube (so take it with a grain of salt) that claimed that the current climate models don’t take into account the reflectivity of the clouds. When these are included, the models appear to be far more accurate. (I only have a passing interest in the topic, no expertise, so I likely misrepresented the conclusions. If you are interested more watch the video yourself.)