I look at like reading and books. Some people learn to read sooner than others, some have a knack for reading, some love books, some dont. Some read faster and comprehend more, some get bored after just a few pages or chapters. But for those that do read, and do like books, its enjoyable in and of itself. Some are further along in the book, but that alone should not determine our own satisfaction with reading the book, we should love it because it brings happiness.
For me, I work on my skills and musical knowledge all the time. I've never been a good at reading music - but I've begun playing in musicals (local theater) to force myself to do it, and gain experience in areas outside of my comfort zone. I've studied scales, and theory, and modes.... but typically I come back to the old faithful of pentatonic minor boxes... but I still work diligently on everything from jazz, to classical, to country (but no bebop yet!). I play in several bands, and people tell me I'm pretty good, but for me I feel like I am still learning, trying to catch up for all those years I didn't play (raising kids, career, house, marriage...). So ultimately I love to learn and grow, but I recognize that I don't have that natural talent the so many guys I've met over the years. However it doesn't stop me from trying.
I think anyone can learn to play something, but to be good at guitar takes persistence and dedication, or just lucky enough to be a natural.
I've had too much coffee..