I always wondered if "common" colds always had a slight biological price to pay. That each time you caught a cold or flu it diminished you in a minor way that y

I always wondered if "common" colds always had a slight biological price to pay. That each time you caught a cold or flu it diminished you in a minor way that you cant perceive. Maybe the folks intentionally taking no precautions against illness are not building "strong immune systems," but are rather doing unnecessary damage to their body. Now that we are noticing long term issues post flu or Covid, I wonder what future research will bring. Maybe other aliments like metabolic issues were kicked off by a nasty cold? What about depression? Please don't take this post as me trying to say any of this stuff is a fact. Just something I have wondered the past few years...