Yes, i miss my work, but physically and emotionally, I know that I am better off taking an early retirement. I've been able to use my research skills for volunteer work and Parkinsopn's advocacy, and found that has helped me cope with the job loss.
The Parkinson's Disease Foundation has published a number of useful resources on living with PD, and I wrote a Fact Sheet for them on-- "Employment and PD: Working It Out". It is available online at :
http://www.pdf.org/pdf/Employment%20...a%20Herman.pdf

I think the Job Accomodations Network is especiallly helpful - they will suggest specific adujstments in the workplace that can help people with disabilities continue working. It is linked to from the Fact sheet or go directly to the JAN pages on PD at
http://www.jan.wvu.edu/media/PD.html
linda