Op, I think you are really missing the point around the nature of our bodies being inherently oppressive
I didn't say our bodies are inherently oppressive, that would be silly, I said that our comparatively smaller size, and vulnerability to pregnancy, that we are easier to rape etc, is something that men can take advantage of and exploit (oppression.)
Though you are really not correct in thinking that no societies have offered options for women around this
Do you mean, like, becoming a nun or...? In the past I mean. One could be a governess, I suppose. Women's comparative lack of ability to earn would've made it even worse- though I suppose a lot of working class women have always earned throughout the Victorian era or whatever (I'm not a historian lol) it was only comparatively wealthy women who didn't work (or that's what I've heard.)
or that marriages in the past never allowed for refraining from sex and childbirth.
@Goosefoot- I think I more meant that refraining completely from sex in a relationship is not usually easy to do long term, and has consequences. And most men would be pretty pissed off at not getting the sex they think they're entitled to I reckon, and would
make their displeasure known in some way.
In fact, now that a long of young men aren't orgasming to it due to their broken wank penises porn habits, it's becoming less the default and many young girls are being pressured into anal and violent sex as the default. The default is always what men are into at any time.
@FishAreAcquaintancesNotFood That's a very good point. My ex would try and insist on anal every time during sex if he had the energy. He couldn't get off without some visual stimuli- that and he probably liked that it's seen as a bit taboo/dirty compared to PIV.
^Felt a bit unfair but not oppressive because our relationship was equal, but biology was different so it just was what it was.
Amplify that to society in general and the equality between sexes would take a lot of the 'oppression' out of the biology.^
True. If society didn't also promote sex roles, gender stereotypes, etc all of this would be lessened in society as a whole. How much we would be working against an inherent biological tendency of men to be rapacious or violent we will never know, but changing how we shape children's personalities and society would certainly help.
It's a very dystopian scenario.
I often think being free of most sex with men is a Utopian scenario TBH. 
If we as women are oppressed by the very nature of our female bodies, aren't we back to the very same viewpoint that to be a woman is an unfortunate thing and we'd all be luckier if we were men?
That's a different point but we probably would, wouldn't we? IDK about 'unfortunate' but it has few bonuses, unless maybe someone considers pregnancy/childbirth a bonus. Which isn't to say we can't find plenty of things to enjoy.
Shouldn't we feel sad to bring girl children into the world as they simply won't be sexually fulfilled?
IDK if when someone gives birth to a baby girl they think of their future sex life. Although maybe sadly some people do look at their little girls and think how vulnerable they are and will be to men.
Women's lack of sexual fulfillment is not inevitable, I agree it's probably not rare and a shame though. I find a Magic Wand toy does the trick, but am open to a partner of either sex that happens to pass by and be entertaining, attractive and respectful (as a PP said, lovers, especially men, being respectful is certainly not a given.)