Quoted from CrazyLevi:

"Why is Co-op Mode not in every modern game?"
That's the name of the thread. People were invited to point out that Co-op is dumb, won't sell any games, and would be a general waste of time like other novelty formats like "supergame" and "timed play" have proven to be over the years.
I hardly ever start threads. But if someone invites participation I'm duty-bound as a good pinsider to contribute. So if you don't like it take it up with the OP!

Quoted from CrazyLevi:

Most people here know the difference between a fact and a value judgment.
I always think it's silly when people get upset that "you didn't state that it's YOUR OPINION!" That disclaimer should be unnecessary for anybody who can think.