What are we looking for?

A 4 years old girl once asked by her mom during their family trip to Korea. 

Mom: do like Korea? 

Girl: yes

Mom: why? 

Girl: because my heart is good here. 

..........

Because-my-heart-is-good-here

Brilliant yet absolute answer.

She didnt say any 'countable' or 'visual' reason such as "because the scenery is good, or because many ice cream here" and soon. 

The 4 yearsold girl, just anwered why she love (being in) Korea simply because her "heart is good" there.

Can you capture what is pointed here?