Not everyone is a photojournalist, so why should they lug the bulky SLR bodies and lenses around? And not every amateur photographer is happy with a point-and-s

Not everyone is a photojournalist, so why should they lug the bulky SLR bodies and lenses around? And not every amateur photographer is happy with a point-and-shoot camera or a phone camera. Mirrorless cameras are a good option for a lot of photography enthusiasts who like to travel light but also benefit from the advantages of interchangeable lenses. They wouldn't sell so well if people didn't find them useful.