Please help me understand this.

It’s almost 2016. We know so much about science and our bodies, and we are making new discoveries everyday.

There’s reality, virtual reality, the ability to transplant organs and so many other medical miracles. 

Basically, each part of our body is interchangeable. Like a Lego set or a paper doll. 

Why then is the color we are wearing, our skin, still an issue?