...Plus, it's dramatically good to have a scene in the armory where weapons and other gear get distributed to the crew in anticipation of hostilities. Visible armor nicely demarcates the transition from "peace" to "war".
I'd still much prefer to see belts or harnesses that erect protective forcefields than physical jackets of armor. The latter may be more "realistic", but this only drives home the point that no real physical armor can stop a bullet from killing you if the bullet is designed to do that: even if the flak jacket prevents penetration, it receives the kinetic energy and that ultimately pulps the wearer.
If it was something like powered armor with an exoskeleton strong enough to support heavy armor, then it probably could stop a bullet. Of course bullets can get bigger to penetrate those. Personal deflector shields might make it hard to walk as then you feet could not make contact with the ground or floor.