The repetitiveness of online debating gets really wearisome. But after a bit of it you realize the likely futility of it. I mean, i've seen a few people eventually admit "Ok you may have something there" but usually it's just rote spouting of the same tired talking points, on either side of whatever debate it is.

As for being emotional -- whether this is bad or not really depends on the topic. Sometimes the appropriate response to something is to get angry. Sometimes the appropriate response is to tell someone to go to hell, because their real goal is to insult and demean rather than "debate."