Not being judgmental and disrespectful of other people's taste in bikes is what real men do.
I don't think you understand something so very basic. They may or may not agree with yours. They are not designed to be personal attacks against anyone...including you. Your argument that people with opinions different than yours make them lessor than you, is a fallacy. I am not sure you understand fallacies, so I will help outline them below, putting in bold, the one you used.
In informal logic and rhetoric, a fallacy is usually an error in reasoning often due to a misconception or a presumption. Some so-called fallacies are not rhetorically intended to appeal to reason but rather to emotion, or a more nuanced disposition. An informal analysis of rhetorical patterns in fallacies should not be confused with rigorously formal arguments in logic, because rationally persuasive arguments require neither to be successful.
Though often used unintentionally, so-called fallacies can be used purposefully to win arguments. Such rhetorical devices, discussed in more detail below, are: "ignoring the question" to divert argument to unrelated issues using a red herring; making the argument personal (argumentum ad hominem) and discrediting the opposition's character, "begging the question" (petitio principi), the use of the non-sequitur, false cause and effect (post hoc ergo propter hoc), bandwagoning (everyone says so), the "false dilemma" or "either-or fallacy" in which the situation is oversimplified, "card-stacking" or selective use of facts, "false equivalence", and "false analogy". Another common device is the "false generalization", an abstraction of the argument that shifts discussion to platitudes where the facts of the matter are lost. There are many more tricks to divert attention from careful exploration of a subject. 
You are simply making an argument that is a lie. Sharing your opinion on something does not make anyone more or less of a man. It would just mean they agree with you.
If a "real man" agrees with everything you do, what makes you so special?
This goes back into you being a narcissist. This one example you just gave us has defined you as a narcissist. Allow me to bullet point straight from the Wikipedia definition:
An obvious self-focus in interpersonal exchanges
Difficulty with empathy
Hypersensitivity to any insults or imagined insults
Detesting those who do not admire them (narcissistic abuse)
Pretending to be more important than they really are
Inability to view the world from the perspective of other people
I feel sad for you. I really wish you could see yourself from other people's eyes. While your intentions might be good, you have a lot of work to do before you can learn to communicate effectively. There's still hope for you, X. You can achieve it if you put your heart into it.