Younger people are more likely to be less knowledgeable, less well read, less widely informed and more impressionable and rash than those older than they. Youngsters cannot have more experience than their elders and are, therefore, likely to lack the wisdom that comes with it. They are trusting and, it is known through voting research, prone to left wing opinions.
It would certainly be disastrous to expand the franchise to the age of sixteen. No one who cannot have paid tax through employment should be allowed to have a say over the government of their country.
Little of this applies to the more savvy older population.
Women are a minority view so should be disregarded



