Why debates are often unethical in nature

Today, I saw this statement in Care2:

http://www.care2.com/c2c/groups/disc.html?gpp=7939&pst=1030979

there are some discussions pre-loaded with so much faulty premises and inaccuracies and false assumptions, that you just don’t know where to begin. these are the ones that i find are normally too exhausting to get involved in, and the chances of anything constructive coming out of it is extremely small, given that the biased starting premise indicates little to no desire to entertain understanding rather than confrontation. one cannot have a fruitful discussion about another worldview by being firmly anchored in another. so people who do that can’t provide any kind of useful exchange. take it from someone who actually knows at least two worldviews, and can see the one from the other interchangeably.

i’ve always disliked debates in school, you know. even though my teachers are forever nominating me on debate teams. the silliness of picking whatever side of whatever topic with the pre-intention of ensuring your side prevails whatever the truth is, is too philosophically pointless for me to overlook.

It’s not only “philosophically pointless”, it’s downright dishonest, yet most people debate in just that way.

Usually, I don’t. When I debate, I am open to being proven wrong because I ALWAYS rely on FACTS for my positions, not dogma.

https://dalehusband.wordpress.com/2007/07/21/an-honorable-skeptic/

(((Because I am honorable, I sometimes willingly concede points made by my opponents in debates with them. This should never be seen as a sign of weakness. When I know I am right about something, I will fight like a pit bull to prove my case and defeat my opponent because in some cases I do see my battles here as a struggle between light and darkness, good and evil, ignorance and knowledge. But I am also willing at times to listen to my opponent and consider his point of view, especially if that person is known by me to be honorable. If we do not listen to others, how can we ever grow in knowledge?)))