Do you dump ink or write until empty?

Just curious, do you write until the pen is empty? Or do you dump the ink when you grow tired of a color/formula and refill with something new?

I’m half and half. I have a difficult time with scarcity mindset (with most things) despite having enough ink to write for many, many lifetimes. Pens that have a dedicated ink IE ones I’ve selected to use black waterproof inks in just get refilled, I do not change that color.