What is your opinion of getting a breast augmentation with breast cancer in family background?

With a positive family history of breast cancer you can still get implants.  The implants should be placed under the muscle.  There have been many studies which show that implants do not cause cancer,  or do they delay the diagnosis of breast cancer.  Hope this is reassuring.

Whether you have implants or not, your family history strongly suggests that you are a higher risk to develop breast cancer and you should remain vigilant.  Breast implants have not been shown to cause cancer or to hide cancer from detection using current technologies and techniques.  Your breast implants will be below the breast tissue whether the
implants are placed above or below the chest muscle. You should be able
to do your normal breast exams with implants in place.  Your decision to have breast implants should not be affected by your risk for developing breast cancer.

My philosophy on this is life is about living.  If implants will make your life a lot better, then go for it and monitor regularly with exams and mammography.   And as stated before, submuscular placement is better for mammography. We have been taught to save for the future but sometimes the future never arrives so enjoy your life to its fullest and do what is best for you.  Another nice thing about having implants is that if a mastectomy is needed in the future, you can preserve your implant and volume and avoid the post-mastectomy trauma but you will need to find a surgeon who will preserve skin for you versus those archaic surgeons that simply remove everything!