Dogmatic
Do you consider yourself "Dogmatic"? In general terms, a Dogmatic person tends to have strong personal opinions about various things that may not be factual. Most people will say they are not Dogmatic because people perceive that their personal opinions are the correct views or perspectives.
I do not consider myself dogmatic per se but I'm sure if you asked those who know me they will say that I am.
Why some people are so sure they're right, even when they are not. Two studies examine the personality characteristics that drive dogmatism in the religious and nonreligious. In both groups, higher critical reasoning skills were associated with lower levels of dogmatism. But these two groups diverge in how moral concern influences their dogmatic thinking. Source 6u.
My guess is everyone is dogmatic to some degree on some issues. I mean, one of the greatest lines in literature is be true to yourself. And for me to be true to myself I see that there are certain things I cling to that others would say are unfounded, dogmatic, beliefs. So, to some degree I am and this article seems to bear this out.