Why Fans Who Don't Want Master Chief's Helmet Removed?

I understand the reason why a lot of Halo fans are having problem or disagreement with Master Chief removing his helmet. I don't see any thing that is wrong with him removing his helmet and I believe that it is the matter of how the plot is developing that will result having to take off his helmet like how he did in season 1 of the series when he was trying to convince KWAN HA he wasn't going kill her as they fly into Reach.

Master Chief is not complete without his helmet. It's why everyone wasn't happy when he wasn't wearing his helmet. He's most vulnerable without his full suit.