This would not really be a good thing for a few reasons:

• People can lie about their age
• People can be mature for their age
• Age does not define experience or how someone would act in any given scenario

Yes, it is more likely that younger people will abuse, but if they get staff and abuse they can be demoted, and if they cannot prove before getting staff that they are mature enough, then obviously they will be denied.

People can lie about their age