This post is about giving suggestions to a diver who asked suggestions; I can see 3 possibilities: [A] you thought it was a good idea {B} you suggest things that you consider bad to other people [C] one person between you and me did not understand the purpose of this thread (and of the forum).
Well, very bad attitude. Most of the consequences of your actions will affect also other people. If you have an accident, because of the lack of seatbelts you may have serious injuries. As a consequence, doctors will have to spend time on you that could have spent on other (more diligent but unlucky) people. If you have a fatal accident because of the lack of seatbelts, your relatives and friends will suffer a lot. And all of these just because you do not like seatbelts. But do as you wish
Obviously, the same apply to diving.
P.S. I will not start any discussion about this topic, it's just a no-go for me. Feel free to answer if you want, but don't expect me to reply back.