The best things in life are free. This is what people say. Does this mean that friendship does not involve give and take? That marriage is one-sided?
Can you rear children properly without time, great effort and attention? What you get out of something is usually proportionate to what you put into it.
Most things in life involve some sort of exchange. You want a new car? You must pay. You want to learn French? You must study, set time aside, practice and persevere.
You want to eat healthily? You will need to research, buy fresh ingredients, prepare and cook the food.