Making a car live for a long time comes down to a few things, proper maintence, not beating the snot out of it at every opportunity and the tune itself. A bad tune can kill the most badass super built racecar motors just as easily as a stock motor. A rough driver can also cause alot of damage with constant abuse.
When talking about stress on engine/drivetrain components and which type of boost is the best for it, there is no doubt what so ever that turbos are best way to go. It's the most efficient setup and least stressful because it's making power on already spent energy, there is no belts creating parasitic load etc.
Roots style blowers and centri blowers are stressful on a motor putting a lot of heat into a motor, a blower that takes power from the motor in order to turn it to make boost and also puts a lot of stress on the front of the crank pulling on it all the time. The smaller the pulley, the tighter the belt it requires therefor putting even more stress on the crank.
Example, my buddy Jeremy runs a 3.4 Whipple on his Cobra with a fully built motor including a forged crank and still managed to snap off the crank snout with the balancer still attached right off the front of the block. So, depending on what set up you are running, a stock 5.0 crank is no match for a big roots style blower if you are going to beat on it all the time and hopefully you don't trash the block in the process.
Turbos have none of those issues. It makes power from already used energy, no belts stealing power from the motor. Does not shock the motor/drivetrain as violently as blowers because the power comes in more linear rather than when you downshift a blower car and BOOM, it hits hard pulling on the rotating assembly instantly. Over time, it causes quite abit of stress and damage even to the most civlized drivers.
Yes, you can make a car live a long time, but it's all in how you treat it. Which is why you hear so many varying stories about a car breaking at 550rw or 750rw. Chances are those drivers treat their cars very differently or one had a better tune than the other.
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