The answer to 'which is worse bed bug or' is that bed bugs are generally considered worse than many other common household pests. Bed bugs are difficult to get rid of, can spread quickly, and their bites can cause irritation and discomfort. They often require professional treatment to fully eliminate an infestation.
On the other hand, many other pests like ants, cockroaches, or rodents may be easier to manage with some DIY methods. While still undesirable, these pests may not require the same level of intensive treatment as bed bugs.