Parents are the foundating from which a baby will rise and fall.

A child is dependant on their parents to care for it, to love and nurture it, guide and protect it. You wouldn't want to disadvantage your own children from becoming the best possible version they can be?
You don't feel quite right yelling at your children, do you? But it is a neccessary tool in raising them to be responsible people. Balance is always key. You clearly do not want malnourished children, and you do not want an obese child.
I want to talk about childhood obesity and the pains that come from being uncomfortable in your skin 24/7, quite literally not fitting in.
Your child will be picked on, they will be bullied. Your child will feel alone. Your child will not know what discipline is nor find the motivation to stand up for themselves. You are giving your child a defeated attitude and a shitty life. You are the literal chain holding down your off-spring from flourishing.
Children with obesity lack fighting spirit because it is clearly being surpressed by fat.
You do not want to raise unmotivated children. You do not want to raise lazy children. You do not want to raise children full of excuses. In the end these children will turn in to unmotivated adults, lazy adults, and adults who shy away from any challenge on their path because they have no reason to face it head on.
Satisfaction comes from the thought of food, that first bite can not possibly quench the thirst your mind created and now the second, third and 50th bite is not satisfying.
You keep eating because you feel empty, but when you look in the mirror there is hardly any room to show your full frame. How can I be this person, how am I deceiving myself? What have I done wrong? Where am I headed?
Do you want children not only full of fat but insecurities?
Stretch marks are normal. Everyone has them, as a man I really appreciate them on a woman. Makes me see her as more mature and feminine. I assume women see something similar in men. Stretch marks are a sign of growth. But what is normal about a child weighing 100 kg at age 12, with a body full of stretch marks?
Give your child a fucking chance.