How do people afford kids?

Apologies, I deleted my previous post as I realised I made a mistake. Then I realised deleting isn’t allowed so hopefully I don’t get banned.

Currently we have a combined salary of £4.9k and outgoings of approx £2.4k (mortgage, car and so forth).

If we had a kid and my partner stopped working and her maternity leave finished (20 weeks), we’ll be done to my wages only which is approx. £3k a month.

After bills that leaves us with £600 a month. On my last post it looked like we had £2k left over when we have kids but it’s actually £600.

Is this the normal? Are we missing something? Do we just need to save so I don’t need to do overtime for the next decade?

A couple of you were really annoyed at having £2k left over which isn’t the case, my partner will obviously need to stop working as there is no one to look after the kid.

We’d appreciate if people share their experiences as opposed to being sassy for no reason when it’s a valid question.

Thanks