Then you use "people in frats buy their friends" differently than most do. Everyone I've heard say that before has gone on to explain that they mean buying friendship from your frat brothers.

I kind of agree with you the way you mean it. The point I made is that it's no different than having roommates and sharing the cost of parties. If you consider throwing a party to be "buying friends" then I am guilty of that before, during and after I was in a frat. In fact, I highly recommend it. It's how most friends are made. It's also known as being social. It's an investment with a very good ROI.

I've also "bought friends" by listening to people I don't know complain about their problems and offering kind words or advice. I've even bought friends by teaching people I don't know about software and providing people I don't know with free software.

If you think that those 4/5 of the people, which I didn't know, were only coming for the free beer then you have a lot to learn. The beer was actually pretty bad. The purpose of the beer was social. It helped them feel confident enough to approach me and start a conversation, which took a lot of nerve because I was looking so "cool" since all those people came to my party.

I did not emphasize the point I was trying to rebuke. You tried to change my point to make it seem that way.

Doesn't the unexplained observations of #8 seem like a possible explanation for #3? If we solve #8, we might also have an answer for #3.