Admittedly, this is anecdote. I grew up in a poor country, but raising my kids in the US. I can count the number of times they had to see a doctor because of fever/cough/vomiting/diarrhea using one hand (each). Had recently one of them struggle taking oral antibiotics because he never had to take oral pills before. My childhood recollection is packing the same amount of misery in one year, year after year. Not saying this is a bad thing, just that my kids grow up facing comparatively minor disease challenges. Life is a giant game of tradeoffs, etc.