My opinion is 4-5
years. Of course it depends on how many you want, your age and so on. What’s
good in 5 years is that the elder has a lot of private time with the parents,
and the younger has an elder brother who is old enough to learn from. They have
enough of a distance to not share the same friends circle which could be
annoying, and also their fighting is a bit more limited (not by much though).
After a couple of years you can even have the elder babysit the younger, but
that really depend on how they grow up and how dependable they are.
Also for you, it gives some time to recover from the first
and get back to real life, which is then easier to somewhat keep with the
second child. I know some people think that, well, while I’m at it, let’s get
it over with, and not waste/spend all this time not working and taking care of
them. Perhaps this is valid, but then they don’t always manage to exit from
that being several years out of commission so to say.
But then, I know people for whom 3 years worked great.
Is it by chance that the difference between me and my brother is 4-5 years? Perhaps, but I would expect this tendency to continue in future posts, at least for people who like their siblings, and/or themselves.