Sociopath Community

 How delightful.

Here is another one.

You don't remember it, but without it you would never die.

Syngamy.

"Birth" is not a suitable answer, since you can die in utero.

  Same goes for death, I don't think you know you won't remember it, some people might say they will remember their deaths, there have even been some studies where some people claimed to have a 'near death experience' and therefore believe in life after death.

 mortality

 We are talking between mature subjects here my dear.

Additionally all riddles have holes in them since they tend to be cheesy (see my point?).

Anyways, here is the last one.

What is the highest value you can hold in life?

An excellent answer.

I think your riddle needs another clue. Is that value a number or is it something like "high ideals"?

 There is only one answer to this question and it is contained within that question.

 thanks

 Death.