Suits are weird, they feel old and out dated, like cosplaying a 20th century business boy in grandpa's pajamas. Multiple layered long sleeve shirt, jacket, and trousers doesn't make sense for the majority of weather in most cities or even more if you're inside temp controlled buildings more often. In the winter you want something heavier like denim or fleece lined or water resistant, and in the summer you want breathable fabric, wicking, single layer, shorts, etc. Overcoats don't need backup jackets, and some of the people who did wear it like a uniform last century weren't people you'd want to emulate.