Irritating as it maybe, users are doing you a favor by even filing a bug, something we devs often forget. Bug reports are a gift allowing you to improve your project, and keep on deving, vs, say, waiting tables.
A friend once worked in a company, where "snark" was considered a valid reason to mark a bug "wontfix". The company didn't last long. It did sound like fun while it lasted though.
In my experience, it's very easy to get irritated at bug reports for style issues or tone, when you are really upset with yourself for the bug and want to blame someone else for something, anything.
As a developer, this is one of the most irritating things to see in a bug report: a smirky uninformed assumption about why the bug exists.