For the first bold sentence, I merely showed you that women still need someone else to move forward in general even in very ‘open’ cultures. The advice would have been different for a man for obvious reason.
For second bold sentence. I already mentioned in different way that, 18 plus has absolutely no meaning or guarentee when it comes to making such decisions.
To make it simple:
None of the factors such as methods, means, educaion, age etc. carry any credibility or assurance, when it comes to find a mate and good successful married life.
Especially age is the least credible measure of being sensible in relationship.
There are very wise younger individuals and very not so wise older people.
Here the question arise…
So what is credible?
Answer: Ability to conform and adjust to the situation and ready and willing to compromise.
No matter what means one use, willing to compromise is the the ultimate way to achieve marriage and later, a successful married life.