I had goals last year- 5000 miles originally, then upped it to 6000, but finished at 5723. That's still an "A" by percentage.
This year- well, I might not worry about a mileage goal. I need to find more time for music and maybe some other stuff, but I am riding with a women's group now so I do have a commitment to ride regularly with them.

I like nybiker's goal to have fun, and I need to stay active to maintain my weight (which has actually crept up several pounds).