1) What is the point of all of this?: The others have explained this already, so I won't rehash what they said. But I will add on, yes we have an ego on here. All of us do. Including you 2. Why? Because everyone in the world has an ego to some extent, that's what differentiates humans from other animals. We have a far more developed frontal lobe and much 'smarter', if you will, mirror neurons in our brain. This is essentially what makes humans have social skills in the first place. The ego tells us what is and what isn't socially acceptable. We as humans are not as apt as other species when it comes to surviving on our own, so we live in groups. But because we are a sorry excuse for testosterone in nature, we need to use our higher intelligence to build much more complex civilizations that put us at the top of the food chain. Now because of all this complexity in our group/civilization, our social skills are also far more complex. This place teaches us these social skills to get to the top of OUR social heirarchy. It is what makes us more desirable. We as living organisms like being desired, simply because evolution refined us to be that way and weeded out those who didn't. Being on top of the social heirarchy increases our chances of being desired and thus our chances of survival/spreading our genes.
2) Is this what makes you happy?: Well, define what "this" even means first. If you are talking about the "what" portion that that those above have already talked about, then yes it does. It should make EVERY person happy. Why? As stated above, evolution has refined us into feeling good whenever we do something that improves our chances of survival or spreading our genes. Dopamine travels through our reward system whenever we do anything needed for survival/anything that can improve our chances to survive. We don't stay in this happy/euphoric state forever simply because it would stop us from wanting to increase our chances of survival further, hence why drugs make people addicted to them (drugs pretty much high jack a person's neurotransmitter reserves and our reward system in the brain). So yes, it IS what makes us happy. Its biological, we didn't just grow into it.
3) Why does it make you happy?
I already stated why in question number 2 (the parts explaining the neuroscience as to how and why it makes us happy).