Honestly I think the cost of raising a child is very subjective on the parents and also "how they're brought up" vs "how they want to bring up their child".
There are many debates on this issue. I see many young couples getting the best for their new born but aren't able to sustain living(especially in KL/PJ). Whereas there are others that give necessity but not the best for children development but sustainability is alright.
Kind of a chicken and egg situation.
Similarly, the issue of renting or buying a property. Would you rent? or would you buy? What's your take?
