Well perimenopause is like a never ending pregnancy and puberty rolled into one, so childless women's bodies do change. Mens bodies change too! Going to bed with a man you went to bed with when he was in his 20s isn't the same as going to bed with him in his 40s or 50s.
My body is changed 10 times more than perimenopause than it was by any babies.
Pregnancy and labour are relatively brief and the tropes of it "ruining" women's bodies, and specifically their vulvas, are dusgusting. It is unhelpful for the women who ARE left with lasting damage as it tells them it's normal, suck it up rather than demand healthcare for it, and it disregards the option of a healthy pregnancy, birth and recovery.
Other things that changed my sex life more than babies:
Medication
Chronic health conditions (that run in the family, childless family members develop them too)
So, no, probably not I would say.
Babies were a blip, perimenopause is a whole transformation which leaves few of us the same at the other side of it