Your non-belief in or disagreement with something that is a mainstream component of sociology and other topical fields of study is irrelevant, particularly since you've never studied any of the things in question and are simply basing your beliefs on how things feel to you. (How super scientifc and logical of you!)
The idea that you actually believe you know more than say, the American Psychological Association, who spent 13 years going over 40 years of research on the affects of “traditional” masculinity is just comically absurd.
You haven't the foggiest idea who you are "by nature" because like all of us you've been subject to intensive gender indoctrination since the moment of birth. Cognitive science says that only about 2% of what we consider thought is conscious. The rest is happening without you even quite knowing how or why due to things buried in your subconscious - built from gender indoctrination, influence of parents, culture, religion, media, peers, and prior experiences. Spend about 10 years or so intensively challenging everything about yourself that you assume is natural and just who you are, and you might begin to uncover at least some of your authentic self. Absent that, you're a dancing bear, doing what you've been trained to do, and thinking the way you've been conditioned to think.
And although much of this societal messaging is that males are more competent, independent, and worthy of holding power, strict gender norms hurt boys and men as well. The Global Early Adolescent Study, based at Johns Hopkins University, concludes that due to these gender norms, “they engage in and are the victims of physical violence to a much greater extent than girls; they die more frequently from unintentional injuries, are more prone to substance abuse and suicide; and as adults their life expectancy is shorter than that of women. Such differences are socially not biologically determined.”