A couple of days I carried my camera that has been modified to allow near infrared and ultraviolet wavelengths to reach the sensor and used a filter that lets only infrared wavelengths in. With possibly a few isolated exceptions, animals don’t see near infrared wavelengths … longer than red (>~700 nanometers). Some things reflect IR, and some absorb. Green leaves reflect almost all IR and are white. The black of bumblebees absorb almost all IR and thus black. Looking at the world in IR is mostly just interesting as it isn’t directly significant to how humans or other animals see the world.
Taking photographs showing only infrared wavelengths doesn’t (at least from anything I’ve done) show dramatic new insights into the topics viewed. It’s just interesting and does in some cases make some difference in what can be observed (as with the Japanese Beetle).
Shifting to another topic that is interesting in black and white, specifically, old machinery; the following are of an old tractor and manure spreader in a field near a plant nursery. These were taken with visible wavelengths.