Is he too young for a hip replacement?

My husband has been diagnosed with congenital hip dislocation at the age of 27. The doctor told him that he would for sure need a hip replacement and to come back in when he was ready. My husband is in constant pain that requires him to be on a strong anti-inflammatory and he has to take several doses of pain medications a day just to make it through work etc. (My husband really does not want to take several doses of pain meds everyday for the next 5-10 years unless absolutely necessary) He decided to go ahead and get the surgery but the doctor said he did not expect to see him for another 5-10 years and said he did not recommend the surgery until then. He also said that hip replacements to not last all that long and you can't always get another one after the first. We were kind of surprised to hear this after doing some research on the internet. We found that individuals who got the surgery done in their late 20's and 30's were extremely happy. We also thought that the artificial hip would last much longer. We would like to hear from individuals who have experienced a similar situation. If you had the surgery at a young age what are your thoughts? If you opted to wait, what were your reasons? Thanks!