Intellectually, I have been really passionate about neuroscience for many years now. I fell in love the first time I learned about the biological basis of behavior in a psychology class in high school. The deeper I get into the field the more my enthusiasm for it increases.
Emotionally, what I feel the strongest about is behaving ethically and creating a just world for all the sentient things around us. This includes not killing animals that we have reason to believe are capable of suffering (unless we have a very good reason), being compassionate to people who are suffering, and offering help rather than judgment to people who are in a bad place financially, emotionally, physically, or otherwise.