I live outside the US. I used to live in New Mexico. There was a very noticeable shift over the years in the grey shit over the sky. New Mexico is considered one of the sunniest states but more often than not it becomes gradually covered over exactly in the way you describe. So now I don't see any. I live in a rainy tropical area but no chemtrails.

Another God given creation I enjoy that's been taken away are dark night skies.