Why the bass is so important to music in general, even though it doesn’t sound loud in most songs?

Question

I feel it “fills” the song but I dont know how to express this in better words

In:

Answer 1

But it’s great when the Bass just lets loose too. My favorite example of this right now is Skameleon’s cover of ‘What is Love’. Go over to youtube and watch it. Right after the bridge, the bassist steps forward and lays down some righeous bars….