I don't need to get anything "out of it." This is simply who I am. The framing of this question implies that what we do is some kind of habit or learned behavior that we choose to engage in, not something that is inherent to our character and/or identity. What does a left-handed person get out of writing with their left hand, when most people are right-handed? Obviously, people ask this question because they are curious, not to offend, but it is a constant reminder that we are (still) often perceived to be misfits or freaks for engaging in this behavior.