Of all the fixed focal length lenses I have used on my cameras, the only one that I have connected with as a standard lens has been an old 60's era 35mm f/2 that I had AI'd years ago. I don't know why this particular focal length appeals to me more than say a 28mm or a 50mm. It just does.
One of the things I have noticed about the way I approach photography is that I prefer to observe people from a distance rather than to get in front of and interact with them. I was always shy, even from a young age. I guess that came with the territory of growing up as the skinny kid in a rough neighbourhood that was filled to the rafters with hard living, hard working, blue collar types. Pointing a camera at people from the area or doing anything considered out of the mould would have found me on the receiving end of communal ridicule. Or worse.
A 35mm focal length requires that you get closer to your photographic subject, but it also gives you enough space to produce a natural composition. It's an ideal view for environmental portraits, which if I was to do without permission back in my old neighbourhood would have at least given me enough space to make a fast getaway.
Some of the best PJ shots I have seen over the years were made with 35mm lenses. I guess the dots connected with more than just me.