Yep, but to me I wouldn't trade the time investment. I really like being with them. My main objective is to guide their souls. If I get to have them by my side when I die I will consider it gravy.
Of course you wouldn't trade the time investment! That is a choice you made.
And, if I guess correctly, the choice on your part was not of an investment equation.
By the way, the quotes were meaningful-child rearing is probably more difficult and complex than trying to split the atom with a dull butter knife!