I got this flag decline message recently:
Flagging to close (not a real question) – Sep 27 at 16:21
declined - Then why didn't you use that reason when flagging? Also, declined because I found no evidence to support, and irony
EDIT: I want to clarify that the validity of this exact flag is not in question, it's the fact that the mod thought I had a "flag to close" option, which only exists for users with less than 3000 rep. My suggestion below is to give this option back to users with over 3000 rep, perhaps on the condition that the question is old.
I had already voted to close the question, then flagged it a few days later once it seemed clear to me that the question was not getting any more views (which also means close votes) and that the OP wasn't going to bother clarifying it any time soon.
For users with "vote to close" rights, the "doesn't belong here" flag option is not available after casting a close vote (I'm guessing the mod had forgotten this). If a close vote hasn't been cast yet, the flag just casts one for you instead. (I'm assuming this does not also send a mod flag, please clarify if you know for sure).
The vast majority of my 650 flags are something like:
"Other" -> "Flagging to close (some_existing_close_vote_option)"
99% of the time the flags are marked "helpful" and the question closed by the moderator. I use this especially for older questions that have fallen out of the spotlight.
Would it make sense to have a flag-to-close option available for users who already have vote-to-close rights? I mean, users without VTC rights can do it, why shouldn't everyone be able to, at least after a certain amount of time (say 1 week? more?).
I do get tired of typing out the same generic custom flag message for questions that are very obviously in need of closing. Is there any way we could have more options for this, so experienced users can continue to help moderate the site efficiently?