evolutionary reasons

I can prove that there are evolutionary reasons 

that unrighteous humans try to abuse others 

to weaken others 

in order to strengthen themselves 

if a child girl falls in love with a man 

and that child girl is allowed to date that man 

with her parents nearby 

until child girls become a teenage girl 

and then teenage girl has sex with man 

until she becomes a young woman 

and then she becomes pregnant 

then child girl has long time to determine if man is succesful 

because she is able to observe man for long time 

and child girl is able to build a strong relationship with man 

because she dates man for many years 

until she becomes a teenage girl 

and has sex with man to build a stronger relationship 

and young woman becomes pregnant with man 

when she is still young 

which increases probability that their child will be born healthy 

and their child will benefit from the strong relationship 

between it's young mother and it's father 

that's why unrighteous humans 

always try to prevent child girls and teenage girls 

from dating a man that they are in love with 

because unrighteous humans wants to weaken others 

to strengthen themselves