Not wired. Absolutely not. At the very worst, we have no short term memory. This just takes more physical notes - maybe LOTS of physical notes.
In some cases, we simply cannot be motivated to learn some things. It is not a matter of ability. Just say "plumbing" around me and I will run away very quickly. I do not believe I can't learn some plumbing. I do believe it is very easy to hire a plumber and be done with it. I have no motivation and likely will not.
I doubt you have had sufficiently capable instructors with your well-being in mind. Many professors and tutors have more students than one and the time to spend with the one may not exist. Back in my early college days, I spent a lot of time with a mathphobic. He was afraid and seemingly incapable. I actually spent more time with this one student than my employers in the Math Lab would have wanted. He began to learn. Truth be told, he later switched his major to Mathematics! The right situation, the right person, the right motivation - many things can happen.