Snail,

It might not tell you anything because you haven't fully understood it.

When you listen to music, you hear where it is likely to go and you have a sense of direction.

This is the result of tension and release.

The classic examples of tension are, the seventh note of the major scale crying out to move up a semitone to the tonic note above it. and the tritone in a dominant seventh chord which cries out to resolve onto notes 1 and 3 of a tonic major or minor chord.

Its about dissonant sounds resolving onto consonant sounds.

Painful sounds resolving onto pleasant sounds.

unstable intervals resolving onto stable ones.

The ear likes music to resolve into stable chords.

Why is that? ... well that's another question ...

but the answer to your question is that dominant to tonic resolution involves movement from dissonant harmony to consonant harmony and the ear likes to hear resolution of unstable chords onto stable ones.

What makes a chord stable or unstable? well that's part of the study of theory.