Debate: Optifine Or No Optifine

I found myself in a debate today.My friend and I were talking about changing our server to latest Update BUTOptifine does not have a Full patch of 1.15.2.Optifine has its pros but not something you NEED.I think you can live without it until it comes out.

Now I'm here asking you guys this.
1.)Do you needOptifine when you play minecraft or you can live without?

2.) Why do you feel like you needOptifine when you play minecraft?

This post was made to the player that useOptifine. Please avoiding commenting about whatOptifine is if you don't use it!