Is it unattractive to have a lot of gray hairs on your head?

I’m 21 years old and school causes a lot of stress for me and I have thin black hair. Bc it’s thin, my white hairs are more noticeable. I have a lot of white hairs and I don't know if I should dye it
Is it unattractive to have a lot of gray hairs on your head?
Post Opinion