No, motorcycles do not necessarily need to be loud. The loudness of a motorcycle's exhaust note is often a matter of personal preference and can vary based on the specific motorcycle model, aftermarket modifications, and local regulations.
While some riders may enjoy the sound and aesthetic appeal of a louder exhaust, there are also motorcycles available with quieter stock exhaust systems. In fact, many modern motorcycles are designed to meet noise emission regulations and prioritize factors such as fuel efficiency, performance, and environmental impact.
Excessively loud motorcycles can be disruptive to the peace and quiet of residential areas and may contribute to noise pollution. It's important for riders to be considerate of their surroundings and adhere to local noise regulations. Additionally, some jurisdictions have implemented noise limits for motorcycles, and riders may be subject to fines or penalties if their motorcycles exceed those limits.
Ultimately, it's a matter of striking a balance between personal preference, local regulations, and being respectful of others in determining the level of loudness that is appropriate for a motorcycle.