DW and I had no intentions from day one, but one thing that we agree upon is that if a couple wants to wait a bit, save up, invest, so that life with children can be more affordable, etc, then more power to them! If you compare having children within the first year of a marriage vs waiting for the family economic situation to be more stable and secure, *and* the desire to have children is still strong, then good! That is being responsible.
I still have the gut feeling that having children by young couples within the first year of marriage is still done "just because it is expected." Judging from some of the mega-bingoing that married people (and the to-be-married peoples) receive, the societal expectation is still there.