There are many important reasons to value individuality, such as encouraging innovation, not being influenced by others, inspiring others and living life with more joy. Encouraging individuality helps not just the individual but society as a whole.
Individuality encourages creative thinking and a disregard for conventions and boundaries. Individuals who aren't limited by notions of what can or can't be accomplished are able to view situations in a different light and devise innovative solutions to problems.
Similarly, a strong sense of individuality means not being swayed by the fears or doubts of others. Many people are plagued by uncertainty and self-doubt, but individuality encourages people to address and conquer these fears. Those with a true sense of individuality are able to weigh potential risks and benefits for themselves, without considering what may be commonly accepted or unaccepted in society. Individuality also encourages others to try more-innovative approaches.
Those who see the success of an individual with a unique idea are often inspired to pursue their own endeavors. Individuality equates to a sense of leadership in this way. Society's most-influential members are commonly those with truly unique and individual perspectives.
Finally, individuality allows people to have a clearer sense of what they need to be happy. Rather than adhering to notions of happiness constructed by society, individuals pursue true joy in whatever form it may take.