Just based on your writing in these comments I can see that you have a ‘knack’ for writing. You’re able to articulate and express your thoughts far better than most people. Some would call that a ‘gift’ (I like to think of it as learned clarity of thought).
In any case, YES, please start now. See if sharing your thoughts about what’s going on around you helps relieve some of the tension you feel.
I would recommend starting with a free WordPress.com blog. If it eventually grows and you want to move it to your own domain, WordPress makes that really easy to do.
If you have any questions at all, or if I can help in any way, please do let me know.
Heck, you can start by copy-and-pasting the above comments and turning them into your first post! Then hop on Twitter and share it. Do a search and find others who are talking about something similar and ask them to check out your site.
Also, if you haven’t already, you might want to check out Niall Doherty and Chris Guillebeau. Both of them have an enormous amount of resources on their sites and huge communities of people around them that I think you’d gel with.