In short, no, I'm not excited to have been hired. I'm excited to have the opportunity to make myself an asset, however. The goal is not to get a job, and merely survive. The goal is to thrive, to vindicate those who invested time, money, and effort in you. The goal is to prove them right.
So: Excited to work towards contributing in a meaningful way, to feeling - however we might define this - good at my job.
One week in, and I feel as if I'm on my way. But there are miles to go, and complacency is nowhere on the horizon.