how can you not understand the convenience factor?  do you mean, why would you buy a home pregnancy test at Walgreen when you can just schedule an appointment at a doctor?  are you kidding me? because it saves time and money, that&#x27;s why.  how is that a difficult concept to understand.  I would certainly choose a quick blood test from Walgreens rather than going through my HMO to schedule a blood test if i suspected something was wrong.  if i received a positive result, then that would factor into my decision to see the doctor.