What do you think about the concept of marital consummation?

What do you think about the concept of marital consummation? It sounds like such an official word for such a private, personal and intimate act. I know that in certain places whether a marriage has been consummated determines whether it is considered complete and whether a couple can get a divorce or annulment. How can that possibly work though? How can a couple prove such a thing? Anyway, I secretly find the concept so hot haha