When my vote to close my own question as duplicate was registered as a simple vote, I was a bit surprised, as I thought it'd immediately close for my own given reason, but the question of whether a user should be allowed to force a close-as-duplicate has already been addressed here on Meta.
However, when I later reloaded the page it was much worse:
I automatically leave a comment asking myself if something answers my question. Well, of course I think it does, otherwise I wouldn't have voted for that.
"The system" picks up my on question and asks it to me again. Well darn, I just told you that it does — take my vote for an answer!
This can't be right!