Is a baby shower necessary?

A • Living the dream. 5 year old boy, 4 year old girl, b/g twins on the way!! What a surprise!! Due in December!
Third pregnancy, I have a boy and a girl. This one is twins. My family thinks I should have one, but I feel like i would seem greedy. I don't know. My youngest is 4 so I do need a lot, we sold a lot of our things a while ago when we were moving. What do you think? Would you if you were me or wouldn't you?