What's Your Purpose?

Ever wondered when you look at yourself in the mirror, as to who are you in this world of 8.5 million people?
Considering the proportion, the world would have been just fine without you, the sun would rise, set, the clouds would set in. And people would simply continue their blind race towards accomplishment just as they did, before they were even conceived.

Everything would take place just as its supposed to. As its been designed to.

So You grow up, get yourself fed, learn new things, run a family, spend some quality time, and then, die.

But hey, wait. Isn't this the life of the stray dog living by your street too?

What makes your life any different?
Human beings are the most meticulously designed creation in the ecosystem.
Why?

Why were WE designed to be
'better' than all the other creations of God?
What is the purpose behind our existence?