I was writing a contact in the marketing world and I realized why I do not want to do market research for some types of companies, and why I prefer to work in the social media world.
I do not want to work at a research firm where I would have to do research for a fast food company, a tobacco company, or a soda company. I think one important aspect of good marketing, and good understanding of the market, is to make a good product that fits consumer need. This does not mean you make products that manipulate people's brains on a chemical level (fats, sugars, nicotine, empty calories) . Good design is important to me, products that harm people's health are defective by design and I do not tolerate treating people like that.
One reason I like social media is because it can make people's lives better, and it needs to be designed well to do that.