Apart from what people have already remarked on, there is increasing evidence of the mid- and long-term side effects of CSs on babies. A baby been born by CS does no acquire the mother's vaginal microbiome, and this has life-long consequences (regardless of how much skin flora the baby acquires through skin-to-skin). Babies born by CS show abnormal skin and gut flora, and longitudinal studies are now showing significant increases in these babies having allergies, eczema, IBS, Chron's disease, and all sorts of immunological problems when they grow up.
Being born by major surgery is not how our birth was intended, and no amount of reasoning based in pain and inconvenience will change our physiology to make CSs good for us. It is similar to the situation we'd be in if everyone opted to have an intragastric tube inserted and being fed directly into the stomach to avoid having to chew their food and hence prevent die by choking.
And yes, it is also based in money. A CS often requires 12+ highly-skilled health professionals, a very expensive theatre, huge amounts of sterile instruments, most of which are one use only, which produce huge amount of waste. Women exit the theatre on IV antibiotics and pain relief which requires frequent observations by nurse and midwifery staff. CSs result in a high proportion of uterine and scar infections a nd deep vein thrombosis. Post partum haemorrhage is a commonside effect of CSs (average blood loss of a VB is 400 ml, CS is 800 ml).
An elective CS with no labour also results in interrupted hormonal changes which affect mood, lactation and recovery from birth. Your body does not have the natural reaction which helps your body heal, so late postpartum bleeding also occurs more often. Lactation is often delayed. Bonding with baby is affected due to the inability of oxytocin to be regulated by labour.
There is a massively long list of side effects, and growing by the day, of electice CSs. Unless absolutely necessary due to risk to mother or baby, it is an intervention that most health professionals agree should never be done without a medical indication.
A straight-forward VB, on the other hand, needs 2 midwives, a birthing room, some linen and towels, some instruments which can be sterilised and reused, and little more. Women are able to get up and walk an hour after birth and do not require regular observations. They require minimal pain relief, and often no opioids. The effect of second stage helps release hormones which facilitate bonding and lactation, which often happens earlier and more effectively after normal birth.
And before the predictable "I had a CS, bonded immediately and had litres of colostrum from day 1, let me explain that these data are population-wise, not individual. Yes, there will be mums who have a terrible time with VBs and plenty of side effects, and children who develop asthma and allergies, and mums who have a CS, recover in no time and their children are perfectly healthy. But if you give me two populations, as small as 100 mothers each, I can tell you with 100% certainty which population had a VB and qhich a CS by asking 3 simple questions about the mother and babies' health.