We all live in different neighborhoods, some are calm, and others more noisy. Different homes also have different noise levels inside depending on appliances and pipes. It could be that the noise is disrupting your life, maybe keeping you up at night or distracting you when you need to concentrate.
Some homes are more prone to allow noise to travel through. Your insulation has a large impact on how sound travels. In some cases, it might be possible to add more insulation to block outside noise, such as traffic or nearby industries. A home built out of cement will block out noise much better than one made out of wood. The makeup of your windows will also make a big difference. Double pane windows block out sound much better than single pane windows do.
Vibrating pipes can make a lot of noise. To resolve this you need to make sure that they are firmly attached and that they have enough clearance.