A.K.
I have a son who is now 9 and has been on growth hormone for about 2yrs (He 1st got tested at age 1 and was followed until age 7 when he failed the 2nd growth hormone test). I too have heard the critiques from uninformed people questioning our decision to put our son on growth hormone (after all both my husband and I are small), but I ignored them as they don't have a medical background, and they don't know what it is like for a 5yr old boy to be going to kindergarten in 18month-2T clothes.
I am proud to say he has taken to the meds wonderfully and is now in the 3rd percentile on the growth chart and has adapted well to the 6 night per week shots. He has developed his own "system" of decreasing his anxiety, and while we had to start with a sticker chart to earn prizes, we are now down to giving him "rewards" of a movie every couple of months. He even gave himself the shots when grandma was babysitting while we went out of town. Kids adapt so well, and so do we as parents. He still complains now and then, but we tell him that is just something he has to do. We never once questioned the doctor's recommendation to start the therapy, and despite the high co-pays, I would never consider not treating a medical condition. He has not had any side effects, and while he still complains about being the shortest one in his class, he is much closer to his peers and it has greatly helped his self esteem. Good luck.