Doctors generally get into the field of medicine because they have a desire to help people. They spend hundreds of thousands of dollars and 10 years of their lives educating themselves in the healing arts.
Are they perfect, no? They are human beings like you and me. The difference is that they have the training and education that gives them a deeper insight into the human body.
Yes, there are bad doctors, just like there are bad lawyers, bad bus drivers, bad teachers, and bad cashiers. This doesn't mean they are all bad.
Yes, they are busy. They probably see 10 patients an hour. This is why it pays to be organized when you visit the doctor, so that you can tell them the most important symptoms.
Sometimes, when there is a chance that things are bad, for you, or your child, they may try to minimize your fears by saying: "It's probably nothing." This is because it might just be nothing, and they don't want you getting too worried. They won't know for sure until tests have been done.
Ultimately, the doctor is not your enemy. The doctor is your partner in ensuring the health of you and your children. To write off everything they say is mistake. If you don't get along with your doctor, find one that shares your philosophy on health and wellness (unless it's something really out there). The doctor is your friend.