I don't think you've chosen a very powerful word to write about. Everybody knows what 'break' means, and I have found myself considering the word before, so that kinda ruins your fourth sentence. Plus, it could also mean 'to take a break', and because it has a second meaning, it takes away the impact of your writing. Unless you'd put something like ''it also means to take a break. When will anybody give me a dam.n break?''.
I like the middle part, however. I find using simple ideas often have the greatest effect. You haven't loaded up your paragraph too much with gabble, it flows well. I particularly like the phrase 'some downtown Toronto sidewalk with people passing me by in the pouring rain' because it subconsciously gives you a lot of needed information without forwardly explaining the situation in some rant about the weather and people these days.
''broken so dam.n badly I might not be able to even be repaired'' - The way you've worded this sentence kinda ruins the flow, maybe just change it around a little. (for ex, ''broken so dam.n badly I may never get repaired'')
Finally, in my opinion, the work 'break' as a standalone at the end really doesn't do it for me. It doesn't end in a satisfying way. It doesn't even make sense to be honest, why is break a word of warning? It would make sense to me more if you ended by saying ''a word of warning though; we all end in the same way. Broken.'' or words to a similar effect.
All in all I hope you continue with the idea, you've captured my interest!