TL;DR: No, as transplanting an organ have drawbacks. Replacing a functional organ is just asking for trouble
Transplants can fail:
Everyone talks about the success rates of kidney transplants. Rarely do we talk about what happens when transplants fail. People will quote the official statistics that 97% of kidney transplants are working at the end of a month; 93% are working at the end of a year; and 83% are working at the end of 3 years https://www.kidney.org/transplantation/transaction/TC/summer09/TCsm09_TransplantFails
Those are just some numbers about current success rate of kidney transplants. 83% of success rate is very good for those who would die without transplant. But they are just disastrous if the people were healthy.
Complications
A transplant can have a lot of complications. Just for a heart transplant, you can get:
- Organ Rejection
- Infections
- Graft Coronary Artery Disease
- High Blood Pressure/Hypertension
- Diabetes
No long term support
Here is an abstract about long-term outcome following heart transplantation. It's not dramatic in current world, as people with heart problem are in the majority of cases quite old. But it's problematic for transplantation on younger folks
Money cost
Another problem is the cost of a transplantation. A surgery operation cost a lot. An artificial organ even more. Replacing every organ of every human would be just way beyond budget accorded to health organization. And this money could be spent way better on other fields. Organ failure is just one way to die. They are plenty others way to die, either environmental (accidents for example), or other diseases (cancer, ischemic stroke, diabetes...)
