All that is composed will decay...

important to/ for

Sep 13, 2012
important to — is used when we want to underscore or vent our emotional attachment to something.

E.g.:
My family is the most important thing to me.
This book is important to me because it taught me a lot about life.
A clean house is important to me = I value a clean house.

important for – the meaning of this phrase is more instrumental in nature.
If something is important for us, it means it’s going to progress our cause in some way.

E.g.:
It’s important for me to learn English because I want to get a promotion.
Balanced diet is important for children.
It is important for everyone to know what is happening in Nigeria — this information can help people understand and help other people.