Human Mind and Emotions

I've created this 'Blog' against my belief that 'Blogging' is right. It's like a giant -Insert personal information on the Internet forever- thing.

The sole reason I have created this blog, is so that I may post here, about topics that are of wonder and marvel. Logical topics, that takes a long while to grasp, let alone edit. I am posting, to gain others views, on the topic(s) and hopefully come to a better understanding of what they are, and why they exist.

If you are after 'humor' or 'love' in a blog, I'd recommend finding another. However, we all know things change. Perhaps one day I'll be depressed, bored and need to vent.

And that is the first topic.
Human Mind and Emotions:

Why do we feel emotions?
It's a simple question, yes, but if you begin to think about it, you start to wonder, why?

Why is it, when we think about certain things, just thinking about them, makes us depressed? Why?
Of course there is the opposite of that, when we think about certain things, we can become blissful, and believe the world is flower fields and rainbows.

Why is it, our first reaction, is always emotional not logical? We live our lives, and find that the first response is usually the wrong one. Because it is always emotional and never thought out. When we know, if we thought about it for a minute, with logic, we'd react better. Yet we don't. Why?

Why are 'Humans' so heavily influenced by emotions?
We are the only race, to jump in front of a unknown person to protect them.
We are the only race, that full knowingly kill ourselves.

Is it an extension of a social development or a emotion development?

Are other animals affected by emotions as heavily as we are?
Do they feel what we do?
Do they depend on them as much as we do?

A simple emotion of Natural preservation. To feel horror and anguish, when a predator is chasing you.
But it is wrong. Why do we still maintain those emotions? When we live in a society that doesn't need such things, we live in society yet we maintain our animal instincts.
Perhaps we maintain our emotional minds, because evolution is behind our social development, as a result we become more social 'advanced' and our minds remain animistic. In which case, shouldn't society realize that, and evolve with full knowledge that we are animals and have instincts.

Social, applying 'emotions' to social event. Why?
Because a specific event, helped you when you 'needed' it?
Circumstantial. Such high emotional value is assigned to it, despite it being circumstantial. Why?