I blame everything on human nature that I don't understand... such as why some people act the way they do. The world is such a complex place that everyone we meet has such a unique understanding of their own surroundings. While I don't understand someone trying to goad me into going to a party, they don't understand why I don't want to go. If I take the time to think about it, I can put myself in their shoes and understand that person's viewpoint. But it just isn't that commonplace, in reality, for people in this world to take the time to see the situation from the other person's perspective. I'm really not certain that everyone even has the ability to think outside the box regularly.
With that said, it would be nice if the world worked in terms of everyone always seeing the other side of the story, but it's just not going to happen. I've found, as I get older, that as people mature they do understand the subtleties of others points of view a bit more. I haven't been prodded as much since college or when I was younger to come out of my shell. I've met more independent mid 20ish, 30ish and later who, whether introverted or not, enjoy a more settled down lifestyle. Maybe this is due to me learning over time to only surround myself with people who will respect my space? or maybe it's just a maturity thing? Regardless, what I'm trying to say, is that I think the conflict between E/I fades a bit over time and with maturity, for reasons that I'm not exactly sure of.