Hell yeah it's complicated. I've been fucking around with this stuff since I was 9 years old and I still haven't figured out 2% of it.
I feel blessed that I know HOW to listen to music. That took half my life to figure out. Nobody is there to teach this stuff. I was lucky I had a 6th grade teacher that made us sit through orchestral pieces and taught us the voices of the different instruments. It opened an entire new universe. I'm 46 but Glenn Miller and Benny Goodman blew my mind when I was a kid.
But Pete Townshend made me want to play a guitar.
I've been to the alter hundreds of times. I've watched Phil Lesh and Tony Rice and Peter Rowan and Rick Danko and PT and tons of others do things in front of thousands of folks I will NEVER be able to do. I don't kid myself about that. Those guys are my heros.
I wish I knew all the theory. It's not that it's rules. It an entire other language!
I guess I'm slow but every time I pick up the guitar or plunk away on whatever other instrument is here I'm doing something I never did before.
Sometimes it works and sometimes it doesn't. I can't make it go.
And the best times I ever had playing there wasn't a soul but me to hear it and there ain't no tape either. I'm not sure it would work any other way.
To be entirely honest I'm kinda intimidated by this beast I have built here in the living room. The manuals are probably a foot thick. My wife thinks it should somehow make money or something.
IT'S A HOBBY.
A SELF-INDULGENT HOBBY.
I know I'm never gonna be able to afford a Corvette or a girlfriend in an apartment.
So I bought a Moog Voyager instead. With all the goodies.
When the spirit moves me I play "Boogie On Reggae Woman" until the whole house vibrates.
I may not get much recorded but I'm having a blast figuring out all the stuff I grew up listening to. Mott and the Dead and old blues. I've been playing Randy Newman tunes like Birmingham and Rollin' and just about wet my pants every time I play the "he was born in Tuscaloosa-- and he died right here in Birmingham!" line on my old SG with a slide.
I know if I learned all those scales and could play them backwards and forwards at 120bpm and knew which augmented chord to walk up in every key I might even understand what I'm playing.
But honestly I'm just seduced by melodies. Some tunes I have figured out--- once I figured out the secret of them they lost their sheen a bit. And mastering just a single instrument physically and dynamically in itself is a lifetime learning curve IMHO. I've been trying to make my guitar sound like 100 different instruments for the last 20 years. I go to bed at night hearing entire new tunes in my head. I hear them all day long. I can't seem to translate them to media. Not because I can't play them.
They're etherial.
And I'm not an AE!

The theory behind recording all this mayhem is an entire other lifetime. Like Jerry Garcia said about pedal steel.
Listen to Phil Lesh. He has it down cold. His band can turn on a dime on a good night. Everything eventually melts into the goo and then they somehow resurrect it in another form. The energy doesn't get used up-- it transforms into another kind of energy. Phil makes it obvious with his jams that all great music comes from the same place. I'd love for someone to explain to me how Phil does what he does. It's beyond theory. It's waves and physics and endorphins. It's Zen. It's dropping the bomb!

It's just like he says-- completing the circuit.