What's this mysterious negative effect on the health of those exposed to them? If they were detrimental, many millions would have died by now being exposed to them. Fluorescents, which have been used in offices and stores since the 1940s, emit shorter wavelengths than LEDs, well into the ultraviolet. However, even those emit a fraction of the UV over a full work day compared to being in full sunlight for a few minutes.
If you want to use incandescent all power to you. I don't see how anyone can stand being under their crappy yellow light but to each their own. That's not even getting into their short life and ridiculously high power consumption. I used to get really bad headaches being under incandescent light. The lack of a true white point will do that. I appreciate that we have alternatives now which are far closer to sunlight, plus far more efficient besides.
What's your plan in the extremely unlikely event LEDs have some unforeseen negative effect, like making us grow a second set of limbs, or letting aliens mind control us? Go back to incandescents, essentially removing a choice from many people which they now prefer more? That'll also mean building a bunch more generating stations, some of which will make pollution burning fossil fuels. No thanks. I'll keep my LEDs, you can keep your incandescents. Thankfully there aren't enough holdouts any more to significantly impact the grid. Commercial went pretty much 100% LED. Residential is well over 50% (that surprised even me).
LEDs are predicted to make up 87% of the lighting market by 2030:
Since they use only a fifth of the electricity required by a comparable incandescent bulb, light-emitting diodes (LEDs) are currently among the most energy-efficient light sources in the world.
www.statista.com
If they were so unhealthy, this wouldn't be the case.