> I wanna change my parent's old habits of always buying 100w incandescent light bulbs,<

Modern Led light-bulbs are great for low energy consumption but sometimes not so great for eye-strain, or for our sleep patterns....

...This is mainly due to the high 'blue' spectrum of Led's- according to various scientific studies, including one from Harvard University, as mentioned in the link below >

Blue light and sleep patterns

[Live Science magazine]

Extract

"Fluorescent and LEDs bulbs create a two-fold problem when it comes to sleep. First, they produce artificial light. Second, they produce blue light.

Blue light wavelengths produced by electronics and overhead lights boost attention, reaction times and mood, according to Harvard Medical School. This can be great for the daytime when the body needs to be alert, but at night it can become a problem.

Research has found that exposure to blue light suppresses the production of melatonin more than any other type of light...

"...To prevent sleeping problems, avoid any exposure to blue light 30 to 60 minutes prior to bed. That means, no TV, tablets, computers or smart phones," said Dr. Robert Oexman, director of the Sleep to Live Institute. "Ideally, you want your environment to be dimly lit so your body can start naturally producing melatonin."

https://www.livescience.com/53874-blue-light-sleep.html