An Olympus XA2 is light, small and discreet.
I’d raise it to my eye and no one would notice.
Even if they do notice, people would be less likely to react, compared to if you point at them with a gigantic Canon 5D Mark III.
You could capture people and their environment – the lens is wide enough.
There’s the interaction between person and space.
Its convenience cannot be overemphasized – a matter of pulling the camera out of your cargo pants pocket when the opportunity presents itself.
Camera: Olympus XA2
Film: Ilford XP2 400