Depeding upon how often you straighten you could have straightened your curly hair straight and now you think they are relaxed ends...when they are really just heat stretched.
I would like the relaxed ends GO! Unless you plan to wear your natural hair straight.
This was my first thought. Some of your curly hair may look like the relaxed ends. I'm not big on hair cuts, but after three years, I would let the relaxed ends go.