I dont understand y ppl give children under 3 n...

I dont understand y ppl give children under 3 nuts, they say not to for a very good reason, no matter how good they are at eating one slip and its the perfect size for their little airways. my son is 20 months and can eat the house out oo so long as they are burning off energy, eating healthy, drinking plenty of water im sure u have nothing to worry about but i really wouldnt b giving nuts