The sensation of heat/cold is actually your body either absorbing of releasing heat energy. When you touch an ice cube, the sensation of cold on your skin is not caused by the ice cube transferring coldness, but rather it is robbing your skin of heat energy which you perceive as cold.

A substance incapable of heat transfer would feel like the exact same temperature as your skin, regardless of how much heat energy it is currently holding.

I think most people that have joined up on Lemmy are sort of like minded anyway, so that probably helps with the feeling of community