Hm, I guess the question is: What do you want?
If you really want to have kids in your life than you
should have them, and probably should agree with your
wife's suggestion of separation.
I was married to a man who initially wanted children - or
at least he said so before marriage. Afterwards he had
millions of reasons why he didn't. Admittedly, he would
have been a lousy father, but it was not my calling to
go through life without a child.
We parted, not soley because of the child issue, but over
the years it became more and more apparent that we
were looking for different things in life. I could not have
stayed married to him.
Today, I am a mother and as boomerang said, it's hard
work, but the rewards are so overwhelming, there is no
comparison. CHildren are an enrichment in life.