Regarding Science and Subjective Impressions

Harlan Miller's article "Science, Ethics, and Moral Status"  touched on subjective impressions and their presence in philosophy and science.  Subjective impressions are the result of familial and cultural influences throughout our lives.  This "base", as I will term it, impacts and ultimately determines our decisions regarding research and various other pursuits (in science and other disciplines). For this blog I will focus exclusively in regards to scientific matters.  As a biology student, I am well aware that my interests and decisions formulate from personal beliefs and interests.  I am broadly categorizing this next question:  Do all scientists study what they feel needs to be explained?  Not only is it plausible, it seems universally true.  Amongst the scientific realms there are chemists, biologists, medical researchers, physicists, anatomists, environmentalists, etc.  As a physician the specialty one chooses is (or should be) based on academic strength, interest, and personal compatibility.  An environmental studies individual will pursue the branches of life that interest them- going further, can pursue protection and advancement in their field.  Do you find this is true, even in other aspects of study? Obviously in science pursuing specified research topics demonstrates subjective impressions' presence in our decisions; is it easily discerned in anthropology, technology, mathematics, philosophy, culinary, engineering, etc.?