Shorts i get. But why does a human wear a jacket in summer that is not trying to hide something or trying to sweat out water weight?

Because im cold. Literally hat is it. When everyone else is complaining about the heat, to me is the most preface day. When I go into work they have the AC at like 19C and I’ll literally get sick, and at home my wife keeps it at 24C which still is cold for me . so I wear a jacket all day. Even for the 10 min car ride from work to home