True, but that factor would have been bigger as well at other places, because Munich wasn’t that important in the past. But admittedly, neither were Hiroshima or Nagasaki.

Just skimmed through the Wikipedia article regarding the WW2 bombing of Munich and found the following sentence:

Munich was considered a special target of allied bombings also for propaganda purposes, in that it was the “movement’s capital city”, the Nazi Party’s birthplace.

So yeah, then I understand why they probably would have nuked it.