NAL.
Just some layman’s perspective. It helps when you have to travel overseas and in other situations where you might need to prove your marriage, could possibly complicate inheritance in the future? It’s not hard to get one made, they just need pictures of you as a couple, the wedding card invite and 2 witnesses IIRC. Do check the list once, I’m just sharing what I recall from memory. We got ours made after 7-8 years of getting married because some visa required it.