So he is responsible.......

[Urwen]

I got it now, Sauron is responsible for our suffering.

Note: and this isn't one of my crackpot theories either. This is real.

From TvTropes:

"Lúthien and Huan defeat Sauron on his island, and Sauron has to fly back to Dorthonion still bleeding from his throat. One look at the map shows that Sauron must have been pretty hurt and panicked, because the shortest and thus fastest way includes flying straight over Gondolin and there is no mention anywhere that he reported finding, let alone noticed, the one city Morgoth has been looking for the most."

So basically, his lack of attention doomed my family.