Not everyone has excellent vision. In addition to those who are actually visually impaired, your eyesight simply gets worse as you get older even if you had perfect vision when you're young.
And even if you can adjust to the night, which is Moon and cloud-dependent anyway, that completely goes away every time a car goes past with its LED high beams.
LED lights have way more capacity to be directional. There's absolutely no reason why street lights can't mostly point down to light the street and sidewalks with minimal light pollution to any nearby houses.