When parents get older they need more special cares and sometimes children don't have enough time for them so that they will send their parents to nursing homes. However, I myself don't like sending my parents to nursing homes even if I don't have time. Instead, I can hire a person at home to take care of them. This idea is much better than sending them to nursing homes.
At least you know that your parents spend a ton of time to take care of you. Now that's your turn to care of them!