For me, it was an inability to only finger strings properly, even after about six months of practice. My hands, even back in my teens, were huge. That includes big fingers (size 14 ring at the time)

Since I didn’t have the freedom to try other instruments in a useful way, I just decided I had better things to do with my time than fuck around making dissonant sounds on a guitar.

But, before you give up entirely, maybe try learning a simple song all the way. That was what actually made my decision. I knew what it was supposed to sound like, knew where my fingers were vs how the strings were supposed to be used, and knew I’d never make the music that drove me to want to try in the first place.

If you can manage to learn one song and play it to the point you can tell what you’re playing, I say keep going. From that point, it’s a matter of practice and figuring out what lessons work for you.

But it is a learning curve that kills a lot of potential players of any instruments. I hang with an old high school friend that fronts a band. I’ve had this conversation with him (and he reached the same conclusion I did after teaching me a little on both tenor and bass guitar, that I might so something, but it wouldn’t be what I wanted) about getting past that wall.

He said that in person lessons are the best way to get past the initial “what the fuck is going on” stage where nothing seems to work. A lot of people pick up a book, or watch videos and try to get going. But those methods don’t work for everyone. So you kinda need someone that can give active feedback on all the little things that go into learning your first song.

And that’s what he says the goal should be; you pick a simple song, learn it, and then improve on it. Takes a few weeks for a lot of people to get something like amazing grace or Mary had a little lamb down to the point that it sounds right. But you have to start simple because you’ve got to get your hands used to the job. It can take a thousand plus repetitions of a given action to commit it to memory in a way it becomes fluid and natural (which is a thing in martial arts, btw, you have drill the hell out of a technique before you can spar with it).

But it’s also okay to give up. It’s your time, your energy. If you’ve discovered that the return on that isn’t fast enough to give you what you want/need, why waste part of your life banging against the wall? Sometimes a learning curve isn’t worth climbing.