Why do some perfer the Manga rather than an actual Anime?

A picture is worth a thousand words as some say. But in a visual standpoint an Anime that's based off of the manga brings more devolpment in how it's going to protrayed. One of the big aspects many have forgotten is:

• Animating Emotions that make the characters feel human like.
• Beautiful music to make scenes feel alive.
• And the prolonging of the Manga. Realistic.

Why read a Manga page with words when you can watch 30 minutes of a animating show. Is it fillers?