I'll very much agree, fans of rival teams absolutely hate each other, and most of those fans hate anyone who claims to root for both teams to win. What that usually means is they are a casual fan. Not the type who throws %^&* and cusses at the tv when their team is having a bad game.
I suppose that sounds fitting, those of us who yell and cuss the tv like we really are 10 feet from the referee making the stupid call, are hardcore fans, and we are the ones who also root for whoever happens to be playing our rivals at any given moment, whether it be at tidley winks or football.
I think the casual or social fans are those who root for both teams. The ones who are there to hang out, and are happy with whomever wins when they play each other, which to me, would completely defeat the purpose of watching. I can turn on a high school sporting event from Texas with 2 teams I've never seen before, and quickly pick a team that I want to win, that way it becomes worth watching. If I start mid-game I usually root for the team who is losing, or pregame I will normally hope for the team who isn't favored.
Back to the point, (I like to ramble lol) I would also say it is likely that most casual or social fans deem our hardcore behavior immature, dumb, or just chalk it up to us being drunks, even if they know nothing about us. Those people who foot for MU and WVU or UNC and DUKE are also the ones who proudly explain to you that it's just a game!! Like I said earlier, some people just don't get it, but those of us who I explained to a "T" as hardcore fans, we definately understand one another.
Last thought, somebody was telling me recently about the Buffalo (wayne) and CK rivalries from the days of old. A husband told me he did not speak to his wife for 4 days after CK suffered a loss to Buffalo. That is a prime example of the hardcore fans of a sports team, who as said above, absolutely hate the fans of the rival team!!!
On a side note, notice that I didn't say casual or social fans weren't real fans. Don't start throwing bricks my way and Hilbilly don't tell me to STFU. This is all just my opinion! I'm not getting into the defining whose a real fan and whose not, that's pure garbage, period.
Happy Easter, God Bless!! and Go Herd!!