I cannot remember being unable to read, I was taught at so young an age. I entered kindergarten with a third grade reading level, yet I was always terrible, and never even knew I was, when it came to spelling. It was only once found internet forums some years back and began communicating with people in writing on a near daily basis, or at least weekly basis, that I became aware of how deplorably atrocious my spelling and grammar were. Even then it took having it pointed out to me, and taking notice of how different half of my words were compared to everyone else's.
I suppose my grammar wasn't as terrible as my spelling, not quite, but still loathable and humiliating to think back on in many aspects. I think grammar is something that is more allowable to be bent, otherwise no one would ever have a unique voice in writing.
I've done my best to correct this problem as well as I am able and I still work on it.
I find the language to be achingly beautiful when used well and I am, honestly, offended by people who are thoughtlessly careless with the way they form their written words. I do not mean that everyone should strive to be a great poet and grammarian, just that every person should work to use the written word to the best of their own ability.
I truly consider the printing press to be one of the greatest achievements of humankind, which advanced the species and our ability to glean and spread knowledge perhaps more than any other invention. I would not be writing this if it were not for it, and no one would be reading it or any of the other.
And it awes me to hear a little child read aloud or to see them write. To think of the complexity of the human brain and the ideas it is able to understand and convey through the medium of the written word.
I can read and understand many many more words that I can speak properly.
My spelling is still pretty awful at times. I use a spell check and try to only automatically fix the mistakes when I am in a real hurry, otherwise I try to sort out where I went wrong on my own and when the little red squiggle disappears I do my best to commit the word to memory.