I thought carefully about this question and came to the conclusion that I strongly agree.
I agree because everybody has the right to say what they think and by ignoring people's comments and viewpoints because they are 'less important' they may stop speaking out when they have something essential to say.
It is important that you listen to what people are saying whether you believe it or not. Just because you don't like someone, or because you don't think their opinion is valid, doesn't mean you shouldn't listen to them. What they are saying might be the final piece in the puzzle that gives you the whole picture.
You may have the same opinion as someone else but that doesn't make their opinion and less important than somebody with the opposite viewpoint. If you think about it if your friend had once said he did not like India and most good people would obviously not agree as well. Then eventually they can want to tell you something about what they think. You will ignore and not want to hear what they say, they can say a speech that will make you really happy.