It’s true that we all hold different opinions on various topics. One person may not agree with another person’s political opinions, while yet another person might not agree with the spiritual opinions of some other person–yet each individual considers his or her opinion valid based upon their own criteria.
As an extreme example–I’ve known people with strong financial opinions, again, based upon their own criteria, who believe that anyone who isn’t a millionaire is simply an incompetent person–and, even though that may be a dumb opinion–you will never convince them of that.