The Middle Finger, Why The Flippin?

I have never understood the reasoning behind flipping someone the middle finger. Not to sound prudish or judgmental but aren’t there other ways of showing displeasure at someone that have more meaning. Perhaps that is the point is to be offensive and crass. Perhaps I have lived a sheltered existence but I think if we all tried harder to get along and be more sensitive to one another that displays of digital displeasure wouldn’t be necessary. Perhaps we need to just chill out and work to be a better neighbor. I don’t know, maybe it’s just me.