Why is 2 sexes so common in nature?

[Another God]

Originally posted by StarkyDee
using more than 10% of our brain

We use all of our brain.

 

[Another God]

Originally posted by Tyro
Asexual reproduction IIRC, as described during my biology lectures [zz)] will not produce the same level of genetic diversity as sexual reproduction.

I said:

I'll say this a few more times, because no one seems to have caught onto it yet: You don't need to have two sexes in order for meiosis => recombination to occur.

Sexual reproduction can be done without need of two exclusive sexes. Why are 2 sexes so predominant?

IOW: I am not talking about asexual reproduction.

For a start you may need a more complicated genetic structure

That isn't necessarily true