Here are some sites that will give you ideas for your essay.
1) Parents are responsible for
meeting physical needs (food, shelter, clothing, safety, medical)
2) Meeting emotional needs (stability, maturity, emotional control, sense of purpose and worth, self-respect, and respect for others)
3) Nurturing needs (education (including college), personal growth needs, love)In these, a lot of time is involved taking kids to activities such as band practice, football practice, library, scouts, church activities, et al.
Parenting is not free.