Many people with cancer like to get mail because it shows that someone is going out of their way to support them. Sending a card does not put the person with cancer under any pressure to respond in person, but gets the simple message of 'Thinking of you' across to them. Keep in mind that you probably don't know the person's exact situation so it might be better to error on the side of neutrality.
Best Answer: According to a scientist at the Forest Reserve District in Illinois, The life span of an average adult housefly is from 20-30 days, and may even survive freezing weather if it stays indoors.
Life Cycle of a Housefly. While some houseflies can live up to two months, their average life expectancy is between 15 and 30 days. Unfortunately, living in the warmth and having access to food as these insects do in a home extends their longevity. Because they do not live long, they complete their life cycle quickly.