I think when it is a kind of one off noise it doesn't bother me - it is the drone of a hoover (or lawnmower) that hacks me off. People have to live, I guess.
Lol! In all fairness, I used to have a bloke who cut his hedges at 8:30am on a Sunday and I did find that unacceptable. As long as it's after 9am at the weekend, I'm generally quite easy going when it comes to noise.