[Pseudoscience-is-malarkey (OP)]

In the context of the lifespan of our universe, it seems to me that agewise (when comparing it to our lifespans), it's not even a newborn baby, nor is it still in the womb, but was just conceived by Mr. and Mrs. Big Bang in the last hour.

[Eternal Student]

Hi.

It's always interesting that most humans want to personify most other things.
I can't really comment on your main topic.  I'm not sure there is a conversion between universe years and human years similar to a conversion between dog years and human years.

[Kryptid]

That depends upon how (or if) the Universe comes to an end in the future. The heat death model essentially has the Universe lasting forever, just becoming less and less dense over time. The Big Crunch model would give the Universe a finite lifespan, but I don't recall how long in the future the crunch is proposed to occur. In either case, yes, the Universe likely is still pretty young.

[yor_on]

If we define it macroscopically the universe have a one way arrow of time, and a entropy resulting (most probably) in a heat death. If we define it from a inflation and a expanding accelerating expansion it never stopped. And it won't.
=

Or maybe it will, depending on definitions.

[Europa]

In the context of the lifespan of our universe, it seems to me that agewise (when comparing it to our lifespans), it's not even a newborn baby, nor is it still in the womb, but was just conceived by Mr. and Mrs. Big Bang in the last hour.

You have nothing to compare the universe to, that would allow for the comparison that you just made.