First, I think A LOT of musicians have this happen. I don't believe there is a little blue pill that can help with this one either!

There has been some really great advice that has been given already. So, I was deciding weather or not to say anything. I think Herb/Guitarhacker has something to REALLY consider!
You went from , at an early age, being passionate about an instrument, which is very organic to...
"My primary musical instrument is the personal computer."
Maybe reconnect to what got you started in the first place. There is a lot to be said of the child-like feeling you get. Try jamming, or playing along with some songs from that time of your life for the soul(purposely worded that way) reason of "remembering."
For the record, I can totally relate to this. I was at a point in my life of having to make a decision to full out tour or not. I think there are plenty of people that have those opportunities.
A friend I met at college and I had to road trip 2 hours each way to play on weekends in a band together on top of being in the school's music program. We were going for it.
I walked away as I got to know the industry more. He tours with a band that has had 6 #1 hits in the last 5 years and has sold well over 16 million albums. How's that for contrast?
Where is this going? When I walked away, I walked away from drumming for the most part. It was what I had built my world around since age 13. Done.
There are times I am asked to play, and I am flattered, but it's not for me. It's not wasted time, it's not a bad memory, but it's not me anymore either. That's weird to have happen, AND it can zap your inspiration!
MY SOLUTION was I still surround myself with exceptional players. Yes, I write jingles, and they are "sort of songs." The bigger reason is, it gives me amazing access to a network of people that don't see me as competition, or a threat in any way.
They see me as a possible source of supplementing income for their families. From there, friendships have been formed!
Here is my point (a long time in the making, but I wanted you to know the thinking behind it), being around these people inspires me like I am a kid! It sparks something in me! You have some great opportunities right here to re-invent your inspiration.
The big thing for me with drumming was, I first had to answer the question of "Do I even want this?" by answering "no" to that hard question, opened the door to new inspiration in music for me.
Let me know if you have ANY questions, or need anything help from me. I know you to be a GREAT guy, and I'm glad you opened up about this here!