The path I walk to work doesn't even have sidewalks over half of it.
When it comes to public walkways, part of it is probably car culture. Everybody assumes that nobody would be using them anyway, so they fall into disrepair.
When I had temporarily lost most of the use of one of my hands, I suddenly noticed how many doors were less accessible than before. Anything that requires grip (round handles) is much more of a pain than anything that mainly uses force as leverage. I also learned how to open child-proof pill bottles with only one hand, which is a skill I am inordinately proud of.
I'm going to go ahead and assume that every single object presents some daily annoyance to somebody if no attention is paid to its design.
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