Nobody likes irregular verbs. When it comes to learning a new language, these verbs dance to their own drummer, running roughshod over all of the conjugation rules you worked so hard to memorize. Even native speakers sometimes have trouble with them.
As Dr. Spock would say:
“Humans make illogical decisions. So, why do these “illogical” verb forms persist in the language? New research from Oxford University provides us with some clues toward the answer. In a write-up of the study published on the Science Daily website”
Professor Martin Maiden adds:
“Many people will remember groaning at school when faced with irregular French or Spanish verbs and wondering why they were the way they were. Our work helps to explain why they, and their equivalents in many related languages, not only exist but are even reinforced and replicated over time.”