Although a helmet now enjoys more prestige and design, it is always been developed and designed to meet all requirements.

thanks to Lucian at dWrenched! For finding this hilarious ad campaign of why we have always needed helmets, and for the rest of them, see https://www.klonblog.com/2016/11/24/print-so-niedlich-kann-man-fuer-das-tragen-eines-fahrradhelms-werben/