I think I have a headlight fetish.
I've been at this long enough to have used designs that run the gamut from glorified D-cell flashlights, headlights with a halogen bulbs and heavy SLA batteries with all sorts of funky charging problems. Then an HID and improved batteries. Then I moved on to a Exposure Enduro a great light that has served me well for over 5 years and continues to do so.
But I went out and bought one of these for some upcoming long night rides.
Yea, there is an element of retail therapy going on here. But a good light is your best friend on a lonely dark road.