Dreads are dirty.
Dreads are actually a pretty clean hairstyle. Greasy hair will not knot up, so it is important to wash your hair regularly. Young dreads can be washed everyday, while more mature dreads are dense and need time to dry. About 2-3 days between washings in order to prevent mold.
Spiders and other bugs live in dreads.
While it is possible to get lice, spiders and other bugs will not live in dreads unless you are comatose. Lice are preventable by applying tea tree oil to the dreads and scalp.
Only African Americans, hippies, and drug dealers have dreads.
Many people dread their hair for spiritual or religious reasons while other people just happen to like how it looks. Some people are just tired of wasting hundreds of hours of their lives styling their hair.