There is no conclusion. Some people feel better with a helmet, some don't. Some people won't ever feel safe unless they have a huge cage around them - and they outnumber us.

If you choose to wear a helmet - understand it isn't some kind of super suit that will protect you regardless of other decisions you make. Under certain conditions it might help - probably will. Educate yourself what those are.

Just slapping a helmet on your head is no cure all - learning to ride, and ride safely is much more important in my opinion.