Its not that pharmacists and doctors don't help people. Its that they don't help people any more than other professions do. Doctors and pharmacists have direct contact with people but that doesn't mean we helped more than others do. For example, my dad is a civil engineer for the state government in charge of designing freeways. A well planned freeway helps people immensely by reducing the amount of time we spend driving which means more time at home with the family.
About imagining what it would be like with no pharmacists or doctors....
imagine what it would be like with no janitors who let us live in a sanitary world. Imagine the mount of disease that would spread if we didn't have janitors...Yet the people who want to "help other" aren't becoming janitors.
Don't get me wrong here...I'm just playing devils advocate. My point is that people can't claim that they are becoming pharmacists or doctors ONLY based on wanting to help people.
When I went for my interviews I was asked why I wanted to be a pharmacist. I told them that one of the reasons was wanting to help people. But I added that I wanted to be a pharmacist because it offers a good lifestyle (aka high income), job security, and wide opportunities. The interviewers seemed interested in my response and asked further questions about that. I got into both of the schools I applied to (UofArizona and MWG). When going to interviews don't be afraid of telling the truth with a little bit of sugar coating.