I would say the only safe time to not wear a hemlet, is when your not on your bike. I have lived in 3 states that do not require a helmet (Kansas, Florida and now Hawaii) I still wear min and the proper gear as well. Sure you may look cool without it, but is it worth it if you have an accident? You should know that while going down the road, you get alot of looks from drivers passing you, what if one looks to long and veers into you? It is really up to you though. Just think about it, if they passed a law allowing drinking and driving, would you do that too? I really all depends on the type of person you are and what is important to you. If you only care about yourself and don't care about your friends and family and what they will have to go through after you are gone, then don't wear one. Just remember, you dying effects more then just you.