Why these huge freakin fins???

I have been struggling with any type of slides, it has been frustrating.

My buddy, who is a very good rider, grabbed my board this morning and promptly faceplanted. He turned the board over...looked at the shark fins, and handed the board back to me on the boat with a disgusted look on his face.

I have a CWB Sol, 141...that came with these huge fins that are about 3" high.

My question is....why??? If I just take them off, what is the downside? I would rather have a looser board for sure.

I would try smaller fins, but I just ordered a new board...so we will see.

So, should I just take them off for the weekend and see what happens?

Do any of you not use fins? why???

sorry in advance if this is a stupid question.