Not having babies (whether a deliberate decision to be childfree or decision taken from us by illness/disability/infertility or a non-decision, put off indefinitely) affects all our lives too.
You don’t need to be a mother to get stuck on the mummy track at work, just being female and under 45 is enough to get you sidelined.
Plus all the horrors of periods, contraception, abortion, menopause and constantly being asked when you are having a baby, and getting pitying looks no matter how confidently your ‘never’ answer comes out
Lesbians might get a bit of a pass on the contraception/abortion front but with contraception prescribed for problem periods, donor sperm pregnancies that have the same ectopic and miscarriage risks as all pregnancies, sexual assault & rape and a good dose of societal comphet making some lesbians into late bloomers, it’s only a little pass, definitely not a universal one, not much of a pass at all really.
Moving through the world with a female body is the one experience we all share, regardless of whether we do motherhood or not.
(BUT it IS true for me that motherhood radicalised me into feminism! Up until I was pregnant I was fortunate enough to not really experience much obvious sex inequality. I was young, fit, gobby and reasonably bright and managed to ‘Not Like The Other Girls’ my way through life fairly successfully.
I was a happy little bird flying around and enjoying the spring sunshine - announcing my pregnancy at work was like flying head first into a patio door and landing in a crumpled heap on the floor.
The Patio Door of Patriarchy cured me of my Not Like Other Girls Bullshit!