Is AUTHOR wrong in the post ? POST : So my father and I get in a lot of political or opinions based discussion, which sometimes escalates to arguments but we never really hold any grudges. We understand we have different opinions and are both willing to admit when the other is wrong (usually me because he is much more educated). Sometimes my mother gets involved in these discussions, and I disagree with her a lot, mostly due to religious and political standpoints. The issue is when I disagree with her and make a counterpoint, to which she responds with something along the lines of "I have 30 more years of life experience than you, sometimes you have to just admit I'm right". This usually confuses and angers me since she is unable to admit her fault or continue a civil discussion by making another point for her opinion and makes it seem like I'm disagreeing just to make her angry. 

A recent example of this was our discussion concerning the legalization of marijuana. I believe it should be available both medically and recreationally, while she believes it should be totally illegal. I brought up a point centered around the health detriments of weed versus alcohol, to which she said the before mentioned statement using her age as some sort of form of validity. I got especially annoyed with this and said something along the lines of "Well you obviously didn't use those 30 extra years to learn how to not be so stubborn." This put her into a rant about how I argue with her just to make her mad, and everything I disagree with her on is purely out of spite. Admittedly, sometimes I may come off as somewhat snarky when I know I "got her" or have a very good counterpoint to which I know she will not be able to respond. Friends tell me she is somewhat narcissistic because of this, but my dad tends to defend her.

AITA?