By the way, here is what Matt posted in that thread:
"They are unique. Why would I want to keep another large SA or CA cichlid that just resembles a Tilapia? So they might move some sand around and fight a bit more but the discus just feel like gems in the tank. Their body shape is really attractive to me, they are like nothing else. Their breeding habits are very unique as well, I mean they carry their own fry. Add in the bright colors, wild OR domestic and you just have a great fish."
Having some change of thoughts, uh? lol. That is just normal.