Motorcycles

Concur.

Two examples because life is funny like that:

I moved into an apartment years ago where it was partially below ground. Didn't think anything of it. And then the first morning I slept there I was startled awake by a car's horn and then engine as it was being remote started directly in my face. Or at least, that's what it felt like. The window was at headlight height, and the car was parked right up to the window. It was hell. Nothing could have prepared me for that. So incredibly loud and bright. Thankfully it was a temporary apartment, but lemme tell you I was highly motivated to get out of there within a few months.

In the second case years later it was a beep. Just a constant high-frequency beep that would not end. Non-stop every hour for months. Apparently my neighbor's RV was parked at a business's back lot behind my house. Well, the battery was dying so the obvious move is to beep non-stop until the battery is fully dead. Months. A few weeks into this insanity I reported it to the police and they drove out and argued with me about how they couldn't hear it and that finally it wasn't loud enough to constitute a nuisance. I can hear it during the day, and I can sure as shit hear it in my bedroom 150ft away. Doesn't have to be loud to me incredibly annoying. White noise would barely mask it. I wanted to burn that RV to the ground.

Noise can be such a thing.

I grew up in NYC, so no, noise doesn't bother me in spite of having lived next to several hospitals. I doubt it's a neighbor at this point.