There is an old saying that the best camera is the one you have with you when you need it. That is an oversimplification, of course, but there are certainly times when you just have to take a photo and you don't have your usual equipment at hand. The photo below is an example.
First, you need to know that all of the black and white photos on this site, with the exception of the one below and the rock band photos from the 90s, were taken with a Fujifilm x100 or x100t. Obviously I think it's a great camera, and two of the things I love about it are things that may turn off other photographers: there is no zoom and you cannot change the lens. That means no matter what I am photographing, I need to move if I want to change the framing or composition. (By the way, none of my photos are cropped; what you see is what I shot.)
Whenever I think I may take some photos I take the Fuji with me. It's small and easy to carry.
One night I was in Denver and went out to buy something. I didn't have far to go (we were staying right next to the 16th Street Mall), so I didn't bring my camera. On the way back to the hotel I saw the scene below. My very first thought was that I screwed up by not bringing my camera, then I remembered my phone. Which, it turns out, has a pretty sweet camera.
So while it may be an old joke, it's absolutely true that the best camera is the one you have with you when you need it.