Wow. This is a really good question. OA, if you're going to be posting threads that make me look w/i myself, I'ma hafta stop comin' over here.
But really, wow, in the last 7 days, I only got mad (really mad, like for real) once. And that was yesterday. And it only lasted for about 30 mins. I would have to say yes, I am mature. [Disclaimer: This does not, and should not, include road rage. That is an illness.

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If you had asked this question about a year or so ago, I would have had to say no.