I've been riding seriously/regularly for about a year now, although like the majority of the worlds population I've been on a bike since I was a kid.
When I was first starting out I had no real trouble on the downhill parts of my rides ( I live in the San Francisco Bay area so the majority of my rides are hill rides), I was even getting comfortable going fast even on steeper downhills (25-30MPH according to my tripcomp, which might not be that fast, but it sure seems so now). Unfortunately the honeymoon didn't last as I was in a few near misses and an accident with a car (his fault not mine, I wasn't hurt but pretty shook up) on my downhill. Ever since then I've been very wary of any downhill parts, I'm always on the brakes and I don't feel comfortable at all getting any kind of speed.
Mainly I'm worried that I don't have enough stopping distance given my speed, and since I already know what happens to my bike when I slam the brakes, I don't want to experience tumbling down the road at 25MPH. I've essentially lost confidence in my ability to right safely on my road bike (even though its mechanically sound), I don't have this problem on my mountain bike (where the fat tires and disk brakes are very comforting).
I've practiced all the downhill techniques, so it isn't a matter of being inexperienced (although I'm certainly not an expert, before the crash I was attacking the downhills pretty aggressively), I'm just physically frightened of letting go and riding down.
I guess the good news is that my rides have gotten much more uphill-heavy, which has certainly helped my hill endurance.
Anyway, what can I do to make my downhills fun again?