To still feel that in the majority of cases, the first wife/ gf is worst off

[Nonunsnonunsnone]

I have a friend who I met in high school. We both met our first boyfriends there and for some unfathomable reason we stayed with these wasters for the next fifteen years. She has one child who's 8 and I have two. A couple of years ago her relationship ended after he cheated (with a girl he met at school!) and she now struggles to pay the mortgage on the family home. He moved into OW's house which she owned outright and they now have a baby.
Looking at their separate lives, it's hard to see that there is any fairness in this world. He has a job, his wife has a career due to not having a baby until late thirties, they have an adorable, apparently easy baby. He can pick up his 8 year old every fortnight and play PlayStation for four hours before dropping him home late (no homework, no proper dinner). They have money for baby yoga, foreign holidays, family friendly festivals whilst for his ex, it's constant parenting, budgeting, rota's and no dates ever except on that one weekend every other month when it usually pisses down and every fucker has plans.
'Ah well at least she's better off without him' does that really bring much comfort?
When are things going to change?

What can I say except if you are economically disadvantaged at the time of having babies.. GET MARRIED !!

If he is the type not to marry YOU then do not get pregnant .,

When are things going to change?

when women stop having babies with wasters they met in high school, relying on them financially, and wait to establish their career before having babies in their 30’s?

i waited to have kids. I owned a house in my sole name, established career etc first. I wanted to make sure if dh dropped dead or fucked off I’d be financially secure and able to provide for my kids myself.

Women don't have babies on their own, there is usually much encouragement from their partners... at the beginning.

Yes but they need proper planning and those plans need to very much include the woman's security.

Some people put more thought/planning into buying a property and sorting out pensions than they do into having children.

Nope. I'm better off in just about every way, thanks very much.