No? Do you have a reason, or are you just uncomfortable with the idea?
As many have previously posted, the rosary has evolved over time, most notably with the addition of the Luminous Mysteries. The Franciscans also have a 7 decade rosary, although it is more or less a combination of existing mysteries. It’s a personal devotion, a tradition (lower case “t”) of prayer.
Keep in mind, however, that the “mysteries” are just that, “mysteries” that pertain to the life of Christ and the importance of these events in the economy of salvation. I am sure we can have a long debate about this, but I would venture to say that not every biblical event is a “mystery.” So Nebuchadnezzar chewing grass, or the beheading of John the Baptist aren’t really things you should be meditating on while praying the Rosary.