Let's get something out of the way: I suck.
I read what I write after I post it, and I think to myself, "What the hell are you doing?!" I have grammar issues, I don't know how long to make paragraphs, and I have an issue where I don't write long posts. I have ideas in my head, and don't know how to put them down. When I'm writing something, I think it's the single greatest thing that's ever been typed. Then when I read something I wrote, and it's absolute torture to go through.
But that's why I love writing.
I'm terrible at what I do practically 24/7, and it's an absolute blast. I'm a grammar Nazi, always have been, even if I don't express it, and my favorite person to torture is me. I love writing, and I love self-improvement. I'm always looking for ways to improve myself, and I've gotten better, I admit. If you compare what I wrote when I started here compared to my latest stuff, you'll notice a big difference in length and quality. Interacting with this community has improved me both as a person and as a writer.
It's made me dig out projects I haven't thought about in years, and finish them. In the few months since I joined this site, I have finished two novels, and four fan fictions. It has motivated me to finish what I started, and that's something summer school couldn't do.
A bit off-topic, but whatever. The point is, I know I'm a bad writer, and nothing you say can convince me otherwise. But I am getting better, and that's something I will always attribute to this board.