Why aren’t more animals hermaphrodites?

In a recent inquiry, a reader named Janet Lesley from Kent, UK, posed an intriguing question about why more animals aren't hermaphrodites, despite the success of snails and worms in this reproductive strategy. This question opens up a fascinating discussion about evolutionary biology and the diverse reproductive methods in the animal kingdom. Understanding the reasons behind the evolutionary paths of different species can shed light on their survival strategies and adaptations, making it a significant topic for both scientific exploration and general curiosity.