Overheard the following conversation on the train to the city today:

Little boy (about 4) said, "Hey sis, if we put our money together, we can buy something for dad."
... no response from his sister (who is about 3) so he turned to his dad and asked, "What can we get with this much $?"
Dad answered, "I don't know ... maybe a toy?"
Little boy asked, "Will we have enough for some candies and a toy?"

Excellent expressive language skills for a 4-year-old boy!

Anyway I guess that's why people have children ... for joy (sometimes candies) children can bring to their lives.