Awww.....I was going to say love thunderstorms, so I'll now say the sound of Hercules bombers as they pass over head or Boeing CH 47 Chinook, I run outside when I hear them coming, they sound amazing
Sounds I hate.....children screaming like they've chopped their hand off, when actually it's something trivial

or my little dogs bark, it sounds like a sonic boom and goes right through you!