If it makes you feel any better, we've been using electricity for ~100 years and we don't know exactly what it is, either.
Wow! You guys are old!
I've only been using it on and off for about 48 years. (get it...on and off....electricity....oh never mind)
My Dad often told a story of his science class in the 1930s at the University of Arkansas. The professor asked, Who knows what electricity is? One guy raised his hand, and the professor had him stand up and asked, Well, tell us all. What is it. The student stammered and then said, Uh, I forgot.
The professor retorted, You forgot? Too bad because only you and God knew what it was and you forgot!.