At night, to reduce the impact of screen use on your circadian rhythm, I think it's best to use dark mode + a program like f.lux or redshift to reduce blue ligh

At night, to reduce the impact of screen use on your circadian rhythm, I think it's best to use dark mode + a program like f.lux or redshift to reduce blue light (which impacts the melatonin suppression). Like others said, there is also a fashion component, dark modes are visually nice if you ask me.