EDIT:
Noticing you have a DAL avatar I realize it is pointless to try and convince you that harems a bad. So I'm not even going to bother replying past this.
I'm just gonna ignore all the logical fallacies you injected in the above response and address this itself.
If you say that is pointless to try and convince someone of something, you are thereby admitting that you are wrong. If you cannot prove something to someone, especially someone open for debates as I am, then you admit you lack proof and belief of argument. If you had actually taken time to give me reasons and waited for my response, and if I had then proven unworthy of backing my point and appeared closed-minded, then you could call it pointless since there would be an issue in the agent itself.
To address what you said, you're right actually that it is pointless to convince me that harems are bad because that in itself is an incorrect statement. There are bad harems, but not all harems are bad. Some of the better stories told out are harems. I am curious though as to why you believe that all harems are bad, so I would appreciate a response. Do be prepared for my response, because if you argue what I am almost certain you are going to argue, I know exactly where the fault in your logic is.
And also be aware that there is a major difference between "This is bad" and "I do not like this". The latter is a totally valid statement and I will almost never try to question it. The first is a different story.