But many of the irregulars can sleep securely, for they have two things on their side. One is their sheer frequency in the language. Eighty irregulars are common enough that children use them before they learn to read, and I predict they will stay in the language indefinitely. And there is one small opportunity for growth. Irregulars have to be memorized, but human memory distills out any pattern it can find in the memorized items.
People occasionally apply a pattern to a new verb in an attempt to be cool, funny, or distinctive.