Well if your society is rational then you should be fine! You should make sure your local school board is funded half decently!

Realistically a society does place reasonable restrictions on individual freedoms.
You should be thankful you live in a democracy, so your reasonable restrictions are pretty much inline with what the majority of voters accept. If you don't like it, you still have the freedom to try to change the laws or leave atleast! A helmet law has no significant loss of freedom IMO, anymore than a speed limit or vehicle registration.