Making optimum use out of a sustaining pedal is a completely separate skill to master, since you have to ensure to notes don't become too 'blurry' (although sometimes this effect is desirable).

The main purpose of sustaining notes is to either to 'soften' the music, or to maintain a sound while you use to fingers to play elsewhere. I wouldn't be able to survive without one, and always take my electronic pedal to my job as an accompanist for singing lessons.

Make sure you learn how to use it, because knowing how to sustain notes is hugely important.