This probably isn't a popular view, but I do feel that many people don't think through the practical implications of having a child/children.
I also find it very galling seeing people round here who have 3+ kids, shiny new cars, seem to manage to go off to Spain on holiday each year, wouldn't dream of putting their children in charity shop clothes, and have a 3/4 bedroom house - and neither parent works.
My DH's taxes go towards supporting people to have a house and number of children that we couldn't begin to afford in our wildest dreams.
We have chosen to have one child as the financial implications of more would mean a real struggle.
We live in London and can't afford anything more than a tiny 2 bed-flat in a 'cheap' and unpopular area. We don't have a car, all my and DD's clothes are from eBay, charity shops or TKMaxx, we don't drink/smoke and only eat out for special occasions - and always take DD with us as the cost of babysitting is nearly £10 an hour and we have no family nearby.
Thanks to one of my relatives having a holiday home, we have been able to have a holiday in the UK each year for free.
DH is a higher-rate tax payer and we don't qualify for CB. Apparently we are rich... well, we can afford to pay the mortgage, bills and eat and not have to go into debt to do it, but I don't feel that not having a maxed-out credit card and enough savings to cover 3 months of expenses makes one rich.
I'm a SAHM, didn't plan to be one, but my employer decided to fire me the week after I told them I was pregnant (I sued and we settled out of court and my settlement helped reduce our mortgage enough to be doable on one salary.)
Unfortunately the job I had, which was well paid, doesn't exist elsewhere. I did get another FT job but it meant a 40% pay cut - a month's holiday club for DD cost more than I earned, let alone travel costs or contributing to mortgage/bills. I now have a small business of my own - doesn't make much, but I enjoy it and saves the £thousands that we were spending on childcare.
We made the choice to have a child and the expense that that entails and have made changes to our lifestyle to do this. We're happy to make those changes, but still doesn't stop me feeling annoyed that people who do nothing to contribute to the pot can have more and we are funding them.