I'm not AMA, as I just turned 33, but my DH just turned 42, so I can relate to what you are saying about "the older parent crowd". We honestly didn't consider it as much of a factor. It was only after I had my BFP that DH commented on how much older he was going to be than alot of other parents, and I told him, actually, I don't think so! (This is his first, our other two are from my first marriage.) When I was pregnant with DS #1, I was 23 and I was the youngest mom I knew. I lived in Chicago at the time and the norm was mid to late 30s for kids- for most of the moms I knew. I actually got all sorts of comments and reactions about being so young- people would check to see if I had on a wedding ring, and I would get a sort of "tsk tsk" look from older moms, like I was naive and it was an accident.
Now, I live in NC, and it is much more common here to see younger families, in some cases I am the oddball out because in my early 30s I don't already have 3 or 4 kids. However, there is still a large sector of the population that seems to be waiting until they are mid to late thirties or early 40s. We have friends who adopted two boys, who are the same age as our sons, and the dad is in his early 50s. It is much more common to spend years focusing on higher education, and a career, before introducing kids into the mix.