Because dads don't always think like moms.
Naming a child can be tricky. While selecting names for their children, many parents simply pick names they like. Others however may be influenced, consciously or not, by popular trends. There is nothing wrong with this. However, being aware of such trends may help parents understand the reasons for their choice better. It may also help them discriminate between names that are creative or expressive, and plain weird.
Some common naming trends include selecting names on the basis of: