While browsing thru baby slings ( here), this quote was on the bottem of the Sweet Things Baby Slings page:   

“Touch is the most fundamental sense. A baby experiences it, all over, before he is born and long before he learns to use sight, hearing, or taste, and no human ever ceases to need it.  Keep your children short on pocket money but long on hugs.”
– Robert Heinlein

Hail to baby wearing and hugging babies!