During Shabbat the members of the Jewish community who are most vulnerable are the ones who take it too far? Technically you are not supposed to even carry your keys, medications, babies, anything, so to strictly follow the rules means either being a shutin for the day or taking stupid risks which could easily cause undo long term hardships or even death. For the most part it is just updating the laws to modern society and the move away from the more communal living arrangements of the past.