Freedom of speech is a right to be enjoyed but it comes with the responsibility of taking accountability if your words cause harm. It is absolutely ok to disagree; what is not ok - is to be utterly disrespectful.
It might be cliche to say but no man is an island. We are social beings and we need human interaction and connection. The need for human interaction will vary with each individual. Each path taken on this journey called life; shapes each of us in different ways and unfortunately some of us become poisonous and toxic to others.