people who think they are smart

I don't understand why when people who disagree on an issue never use educated reasoning to defend their side. I was watching a video on youtube the other day on a tax issue and after the video I read some of the comments people made about the video and all intelligence went out the window. If you don't agree with something don't just say "you people are stupid and this is gay". A twelve year old could win an argument against that kind defense. I have no problem disagreeing with someone but when you throw all logic out the window and use junior high argument tactics your not even worth the breath it would take to go in the circular argument I'm sure you will take me in. Most people who make comments of that nature usually don't really know what they are talking about and are just mimicking what they have heard other people say and don't even take the time to actually do some research to find out what they really believe. Can someone please tell me why we should listen to people who don't even have enough gull to give an educated response to an issue, but it seems like that is what we have come to. We want all the issues spoon feed to us and don't want to spend just a little time find out what is really happening or what the issue is all about. Have we become that lazy that we fell happy just letting other people think for us? Just to let you know you are not using your brain when you just repeat other peoples thoughts, instead you have just become their "dummies".