Having empathy on a subject is definitely important. But it’s also important not to take an argument personally and not let personal anecdotes influence you more than they warrant. We’re not really talking about every poor person here and we’re not talking about your childhood friends. We’re mostly talking in generalizations about broad demographic trends.
Random study on obesity’s correlation with sugary drinks: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2862465/