Obviously suicide and depression are sensitive subjects, hence why so many people have been arguing on this thread.
My take on the original question, why are people so ignorant about suicide and depression ?
Because there is a lack of understanding about what suicide is and what depression is.
Depression has not been proven to be a chemical imbalance at all. You only have to look at a lot of Irving Kirsch's work to see why. A few reasons why it isn't a chemical imbalance of serotonin - the fact that negative studies of antidepressants aren't published, the same positive studies being reported to enhance the image of the drug, the fact that reducing serotonin does not produce depression (according to the theory it would...).
Also, the fact that many people have to change antidepressants in order to 'find the right one'. To my knowledge, we don't have to change medications for other diseases in order to 'find the right one'. Either it works or it doesnt.
Also the fact that antidepressants take about 4-6 weeks to 'work'...some people are 'treatment resistant', some people improve with CBT, some people turn to suicide.
Therefore, in conclusion, We still do not know what causes depression. There are many explanations ; a chemical imbalance, irrational thoughts, childhood trauma, bereavement, relationship breakdown, abuse.
It is easy to see how anything prolonged can cause depression, for example, if one dwells too much on death, abuse, being bullied then it's obvious that it will cause someone to become upset and interfere with their sleep, eating , daily routine etc.
The bottom line is there is a lack of understanding in general about depression, in psychiatry, in medicine, in psychotherapy, in everyday life. There are theories about depression but that is all they are, theories.
As for suicide, suicide is an extreme form of self-harm. You harm yourself by eliminating yourself from life. It is an escape because you feel like you cannot cope anymore with your condition. Maybe you've had a lot of treatments and none of them worked and you are sick of it. Maybe you lost something that meant a lot to you and you just can't cope without it. There is not one explanation for why people suicide but many. Just as there is not one explanation for depression.
Until technology advances and science advances so that there is a completely objective test for the presence of depression then we will argue and debate.
But maybe the human race is never suppose to find out about what causes depression. If we did know, then we could come up with a medication that causes happiness and therefore we would never experience sadness. Then we would have an emotional imbalance of the other kind, always happy, never sad.
The day that comes, we would cease to be human. Humans are meant to feel unhappiness, just not for a prolonged amount of time.