Am I really balding?

Did my dermatologist prescribe Finasteride too liberally ?  Context : 27 y/o. Father and his 4 brothers have full heads of hair. Mother’s side : 3 out of 4 bald uncles. They were bald in their early twenties.  I went to the derm two weeks ago. He didn’t look closely at me or do a hair count. He was like “yep, looks like MPB alright” and gave me a prescription for Fin (1mg). First pic is Aug 2017. Rest of the pics are from the last 2-3 months.

I would have performed a HAIRCHECK and a miniaturization study before committing you to a lifetime of finasteride. Too many men go on the drug not knowing for sure if they are balding. I like to make the diagnosis with instruments first, then use these instruments to establish a ‘metric’ which I can follow yearly to see the effectiveness of the finasteride yearly.  That is the value I believe doctors should add to this treatment process.