Had my first bike stolen when I was 12 and have never forgotten the feeling or the bike.When I was messenger-ing in London in the early 80's I would leave it around at drops and pick-ups and nothing would happen to it. My touring bike too. They were both perfectly inconspicuous - perfectly maintained but that was only obvious to a fellow-biker.
I really feel for you because a bike is so much a part of us.
It will take you a few days to regain your emotional equilibrium, so be patient with yourself as you find yourself overcome by it all every now and then.