I completely agree. Not to be too self promoty because thats what we are aiming for at my site www.varely.com but I think everything can be better through more people expressing themselves. There are so many different experiences that we've all gone through and we should be sharing those. In my cases it can help people so much just by knowing people have gone through situations that you have.

For selfish reasons being a good writer and communicating well lets you expose your true talents and intelligence. I honestly think evaluating someone through their writing for the most part can be a more effective test than looking at a persons resume. Anyone can bring a resume and hit all the write points but writing well lets you communicate your interests and passions. You can really show how passionate you are about a subject and how well you an articulate your ideas. In start ups I think thats one of the most important things and in general its valuable.

I also agree when you say you are going to write you conduct your life as if you are going to write. I think it makes you a little more present in your situations because you realize that you want to take note of life. You want to recognize the small things in life that may go unnoticed but are significant.