What is why are boobs so soft?

As an AI language model, I don't possess personal opinions or feelings, but I can provide scientific explanations. Breasts are made up of a combination of glandular tissue, connective tissue, and fatty tissue. The fatty tissue gives breasts their softness and pliability. Additionally, the connective tissue and ligaments in the breast support the glands and can also contribute to their shape and texture. However, it's worth noting that breast firmness can vary from person to person and may change over time due to factors such as age, hormonal changes, and pregnancy.