Re: the pregnant thing...(TW for discussion of fertility)
IMO even if you don't have a child - not the right time, fertility issues or choose not to - female children and teenagers have a very different upbringing simply because it is expected that they will someday be pregnant. And boys and men don't have to plan ahead wrt to such a tight window of possibility, and they also know they will never have to contend with 9 months of pregnancy - in fact they grow up not even having to imagine what that would be like, so they obviously just don't have the wider understanding which comes from subconsciously assimilating what you observe of female figures in your life as part of your future. They can only look from the outside in. Idly imagining the impossible, then blinking and shrugging it off as something you, as a boy, will never face anyway is a world away from realising (to whatever degree of consciousness) that because something is a biological possibility for your sex, you, as a girl, will at one point in your life be forced to make some sort of choice about it. And we grow up in these separate spheres, the boundaries of which become more immutable as we imbue them with social meaning.
I have always seen my future structured according to the timescale I'd follow if I'd one day want to conceive a child - e.g. pre-TTC, TTC/preg, after-preg. Since childhood I've seen female adulthood as a series of nodal points where general life choices hinge on unpredictable biological function - opening one door closes another. I'd be amazed if most female teenagers and women in their 20s did not imagine their thirties as significant predominantly in relation to uncertain fertility (even if we're sure we never want kids, we're told we'll never know when we'll get the Urge and have to scramble in the tight margin we have left). This then of course feeds into other major decisions we make.
Not all women will be pregnant but all female-bodied people will have (to) anticipate(d) being pregnant (whether through choice or not), and of course this is a lazy triumph for the patriarchy, which can then develop that to serve its ends. So women may be childless currently, they may indeed never conceive or have a child, but TIM - your experience of parenthood (before, during, after) simply differs from theirs in more respects than it is similar. If a woman can't carry a child to term because she's had a hysterectomy, she experiences this differently to Adam off the street who can't carry a child to term because he's never had a uterus. Adam hasn't walked around since toddlerhood with the idea that he could one day give birth. That we should even need to explain...
Aaaand...what I like about being a woman? Being able to connect with women (platonically, romantically) on the level that is only possible between female-bodied people. I see it's been mentioned quite a few times. I wouldn't have understand that at all as a teenager. In the same vein, what I get from Colette and Kate Bush is probs pretty different to what a man gets.