Is it forbidden to feel hatred towards bed bugs, which God created and which harm humans and transmit germs?

No specific wisdom behind the creation of bed bugs has been revealed, but every creation of Allah Almighty was created for profound wisdom. Among the wisdoms in the creation of harmful insects are the manifestation of Allah's perfect craftsmanship and His management, the testing of His servants through them, the demonstration of human weakness, the humiliation of tyrants, the manifestation of the immense favor (of Allah) in creating beneficial things, the extraction of useful medicines from them, and their role in forming a link in the ecological balance. A Muslim must believe that all actions of Allah Almighty are good, and there is no pure evil in His creations.