In my particular case, I research from documentary evidence ONLY (B-M-D, Wills, Court Records, Deeds, etc.). The photos are fine to look at, but are not as important to me as having my tree reflect an accurately proven lineage.
Personally, I never use images of people's faces, with the exception of my own family where I know the identities. Just a couple reasons I don't want photo/story hints...I have seen numerous occasions on Ancestry and elsewhere, where someone has a photo in their tree either misidentified, or has attached a photo of my family member to the wrong person in their tree who happens to have the same name as my family member. I often see headstone photos with very clear birth and death dates on them, and in one specific example (there are many to choose from), the tree owner insists on using a death date which is 10 years and many months prior to the date on the headstone.
Stories sometimes provide clues for other members, but in my case / my family, folks on here have the information about my ancestors so hopelessly mangled that most of their stories are completely useless to me. For my own purposes, I would rather have a well-proven and documented tree rather than one that is just filled up with "fluff".