Sex education is a very important educational course, which can help children to establish a correct sexual concept, understand their own physical and gender characteristics, and understand the knowledge of sexual behavior and reproductive health. Therefore, I think sex education is very necessary.

Here are some reasons:

1. Improve health: Sex education can provide children with knowledge about physical and reproductive health, and help to improve the health of individuals and communities when necessary.

2. Help children establish correct values: Sex education can help children establish correct understanding and sexual concepts, enhance moral awareness, self-control and awareness of delaying sexual behavior, and reduce the risk of minors suffering from sexual violence and other crimes.

3. Enhance social adaptability: Sex education can help children better adapt to society, improve their mental health and social skills, and reduce the incidence of autism and psychological problems.

In a word, sex education is a very important educational course, which can help children acquire knowledge, values, self-awareness and social adaptability, and is conducive to their physical and mental health and all-round development.