You are perfectly welcome to appreciate every single fight and haphazard thinking, and nobody forces you to use the ignore feature.
But the ignore feature has been a staple of online forums even since before the Internet. It was in Compuserve and Bix in the 80's actually. As well as BBSes (remember ?). It quite naturally made it to Usenet Newsgroups. And now social media.
I am sorry, but there are here (not many, fortunately) people who are unable to post anything useful at all whose brain don't seem to be debuggable. There are also extremely unpleasant people I frankly don't care to know the opinion of.
It is anybody's privilege not to pollute one's mental landscape with unnecessary blabber. We do this everyday in real life, by simply deciding which newspaper we read or not, or which people we want to talk to.
I believe especially in an era of social media where anonymity is rampant in spite of real names policy (which is not even enforced), it is SO 21st Century to be able to squelch deplorable and uninvited.