Preschool or the First place the kids see a world different from the comfort of their houses. This is also the place where they tend to meet new members and make new Friends. Man being a social animal needs to have people around them for almost all things.
Hence Pre School can be a steppingstone for the Kids to enter a social life than the family bound life.
Preschool tends to teach the kids the very basics of everyday life in a joyful and enjoyable manner.
The tinge of music being added to the material to be taught, helps the kids to listen, concentrate and memorise the things as they understand.
The activities like jumping around, dancing and mingling with the friends helps them to get a confidence in what they are doing. They get ready to put their first steps to the big world of competition, on completion of the Pre School days.
Looking at the perspective of a parent and a child, the parent with the help of the teacher would be able to possibly identify the good and the need improvement things. This when taken care in the younger age will again be a good thing to polish to get more brightness.
Hence a preschool will be a good place for the overall development for the kids.