I think a formal answer is always better than an answer made in a comment. I believe this is true even when both the question and answer are simple. Here is why.

1. Formal answers are more likely to be read than comments.
2. The content of a formal answer is looked at by our search engine; the content of comments are not.

For the above reasons, I am frequently guilty of the practice Feyre complains about. I usually make any such answer a Community Wiki answer because I am not doing this to grab reputation. Up to now, I have made 98 such answers. Sometimes, I don't make an answer derived from comments a Community Wiki answer because I believe I have contributed significant additional value when I wrote the answer or, I am sorry to say, I forgot to check the Community Wiki box. For the latter, I apologize, but not the former.

I think a formal answer is always better than an answer made in a comment. I believe this is true even when both the question and answer are simple. Here is why.

1. Formal answers are much easier to read and therefore more likely to be read than comments.
2. The content of a formal answer is looked at by our search engine; the content of comments are not.

For the above reasons, I am frequently guilty of the practice Feyre complains about. I usually make any such answer a Community Wiki answer because I am not doing this to grab reputation. Up to now, I have made 98 such answers. Sometimes, I don't make an answer derived from comments a Community Wiki answer because I believe I have contributed significant additional value when I wrote the answer or, I am sorry to say, I forgot to check the Community Wiki box. For the latter, I apologize, but not the former.