As you gain experience in any endeavor (eg SEO, marketing, business operations), you reach higher and higher until you are finally in the top 10% or even top 1% of knowledgeable people in society about that topic.
This unfortunately means that you will slowly begin to see other people as dumber and stupider than yourself in this area.
In fact, it may eventually get so bad that anytime you talk to others about what you do, they are so clueless (and offer such ridiculous opinions of it to you) that you eventually just stop talking about what you do altogether, because only a tiny fraction of people will understand what you do.
This has happened to me at least to a small degree with the topic of SEO and online business. Even though I am not a ridiculous success story, I still wager that I am in the top 10% or higher in the general population of knowledge about SEO (probably higher, I mean really, not many people know about how search engines or online business works).
And this isn't just true for us internet marketing people. It's true for every topic that exists and every person that exists.
This also means that other people who are experts in other areas that you aren't... probably think you're an idiot when you try to talk to them about the area in which they are experts.
For instance, a fitness expert will probably view every person who is out of shape as a fitness idiot. Or an economics experts will probably view every average Joe who shares his uneducated opinion about the economy as an idiot. Or a super social extrovert will probably view every introverted shy lonely person as a socially inept idiot. Or... you get the idea.
So, what area of life are you an expert in? And does it annoy you when you hear other people who have no real clue about that area share their opinion as if they know what they are talking about?