I posted an answer to this question. My answer received a downvote, and when I asked them to justify it, another user commented that they guessed it was "based on belief that no one should waste their time and energy to answer these types of questions".
I don't understand why people would think like this - I gave what I thought to be a well written, complete answer to a question which, in my eyes, has a slightly tricky twist to it - it involved noting that we can write $1=\frac{n-f}{n-f}$
Is it normal practice here to downvote answers like mine based on the fact that the original question poster provided a poor question (it was missing any sort of input on their behalf)? Is it just me who thinks a well-written answer to a question is better than leaving the question answerless - we are meant to be here to help, after all.