When I started with photography I also focused on the widest aperture possible as I heard as well that you just open your aperture, shoot and it's gonna work. Well, not that true so it's good that you point that out.
I also shooted with the kit lens for long time and after a while realized that I didn't like it. I bough 24-70 lens and just loved it. It's amazing to see the difference for yourself and get addicted to purchasing new and new lenses :)
Thank you for the video! Have a lovely day!