Actually, Homo sapiens has been around for only about 500000 years, with anatomically modern humans existing for some 200000 years. At least that is what Wikipedia says.
As for reproduction, here is a video reflecting my thoughts on it (skip to the 1:07 mark):
[youtube]http://www.youtube.com/watch?v=CBkc8Pm9_x8&t=1m7s[/youtube]
With that said, I have to admit that, while I do not want marriage or children, I am currently very interested in a girl (who also does not want marriage, although I think she wants children someday).
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DISCLAIMER: It should be noted that, while I strongly suspect I have Asperger's syndrome, I am not diagnosed. Nevertheless, my score on RAADS-R is 186, which makes me a pretty RAAD guy.
Sorry for this terrible joke, by the way.