There's more to that than just hearing your voice.

I'm talking about listening to stuff that's being recorded or performed.

For example, you are tracking vocals and you are too forward and the proximity effect is giving you too much lower frequencies. You won't hear that with transparency mode.

Or you are tracking the guitar and need it to have an instant response (up to 10 ms latency is fine). You won't be able to play to the click if the latency is too big.

Hope you get my point.