Ppl say your left tit is smaller than your right is b/c that's the side your <3 is & other ppl say it depends on which hand you write with? is it true

Confusion: The right lung is larger than the left because of the heart. The right pectoralis major may be bigger if this is your dominant side for throwing. My anatomy friends tell me that left breast is on the average a few % larger which explains why there's a few % more left-sided breast cancers. Even questions like this that are not life-and-death can be fun; thanks for asking.