Well, it all depends on your preferred style of play and what level of realism or magic shops your players expect. If you enjoy the game simple and fantastic, that's completely fine! As said, I've taken my notes from BG3 and 5e, but armour, or combat in general, did not make the list. Setting and equipment-wise, my group demands a certain level of verisimilitude and otherwise points out logical gaps or exploits them.