Yes I do find that a legitimate research topic but I was underwhelmed by this abstract:
There is inadequate understanding about why people might not own pets. This qualitative study asked eight elderly women and men to discuss why they do not have a pet, whether pets were deemed beneficial to health, and whether they had plans for future pet ownership. Reasons for not owning a pet were Emotional or Pragmatic; Pragmatic reasons were categorized as relating to Convenience, Negative aspects of companion animals and Competing demands on time or energy. Participants expressed mixed feelings in their plans for future pet ownership. Clinical and research implications of these findings are discussed.
I guess they save all the good results for the paper.