Formal education and infant development

Do you think that purchasing educational toys and media for infants is worth a try, despite the lack of scientific research supporting its use? Why?  Under what conditions might its use actually have undesirable consequences?
Why do you think parents generally do not seem to be concerned about the lack of scientific evidence for the effectiveness of educational toys and medial for infants?
I would like to have your opinions and your reasoning behind your opinions. Please submit in Times New Roman font 12, and in APA format.