Obsession?
1. I'm one of the administrators on Candlepower forums
2. I helped create one of the first custom, high-powered LED flashlights ever sold.
3. I have replaced all the interior lights in all cars with custom LEDs and circuits that allow dimming and auto-off.
4. Every often-used light in my house is now custom LED.
Don't make me post links.
Yeah - OK - Obsession to you, side hobby to me.
Along with the flashlights I switched most of the house to LEDs and many of the car bulbs, but I tried to use mostly off the shelf parts.
(Easier to do these days compared to when you started blazing the trail).