Yes i hated that. And i think it is one of main causes of my ed.
Modafinil and Methylphenidate really helped with it before them it was a life like only with grey scale colors.
One other thing worked was aromatase inhibitors with them i completely feel like a man.
I am in edge of anhedonia as soon as i feel like dull, i run to gym and do heavy cardio until hit by runners high.
Also, I am on strict keto diet (testing histone deacetlyation inhibition of beta hydroxy butyrate). It causes enhanced feeling of positive emotions after ketone levels increases with fasting, exercise, MCT oil or bulletproof coffee, may be it is placebo effect of accomplishment but i still have almost zero libido if it was really placebo i would expect at least some restoration of libido.