NOKW - War of the Worlds

Here comes the next chapter in our "I'm Okay With, I'm Not Okay With" series where I point out things in a movie I can tolerate and then one thing I just couldn't (if you want, click here for all of the past posts):

Movie:  War of the Worlds

Basic Plot:  Aliens attack Earth and Tom Cruise must protect his kids from said aliens.

I'm Okay With:  The fact that the aliens buried their killer tri-pods fairly shallow under city streets and no one stumbled across them.  The fact that Tom Cruise somehow survived that initial attack when it seemed like every person who came near him was blown into dust.  The fact that Tom was able to so easily start that van after all other vehicles were disabled, just in time to drive away from danger.  The fact that Tom and his family should have died WAY too many times in this thing but magically survived each time.  The fact that I'm still not sure that Tom should have killed Tim Robbins, the guy was only trying to survive too.  The fact that Tom Cruise's son magically survives an explosion from an alien offensive that seems to kill everyone else and then he easily makes it to Boston before Tom Cruise does.

I'm Not Okay With:  The fact that the aliens were defeated so easily.  These aliens have the technology to travel across the universe, invade a planet, and yet at no point during their planning they think about native germs.  Bullshit.  They thought far enough ahead to bury their attack tripods under cities and yet while they were down there, they didn't bother to see if any of the local germs and viruses could infect them?  What about taking a couple of samples with them and inventing a cure before their attack?  We know they are advanced enough to travel the cosmos, but not smart enough to defeat the common cold?  I am not okay with that.

"That the aliens' tripods might be the worst designed war machines ever, just one easily placed missile will take it down."