The time factor make such move look successful. And Poland doesn't benefit from this.
I think you are wrong, you do not understand engagment geometries or timelines. Poland has no particular geographic advantage for defending the United States from missile attacks from Siberia or the Middle East.
The United States would view a situation in which a nuclear armed "rogue state" in the Middle East could exert political pressure on western Europe unfavorably.
The United States should consider Russian sensitivities in these matters. It is not in the U.S. interest to needlessly antagonize Russian public opinion.
How would Russians (or Poles) feel about a U.S. withdrawal from Europe? Would Russians welcome a reunited Germany nursing grudges about the explusion of ethnic Germans from eastern Europe, unrestrained by an American military presence?