If the gun is used and you don't know how many rounds were put through it before you snagged it, then yes, by all means, change the recoil spring. In addition to having peace of mind, you also have a spare recoil spring.
You should do that with any used firearm if you don't know how many rounds were previously put through it.
The Colt 1911 is a good pistol, but it requires regular maintenance just like any other weapon.
If you want to "set it and forget it", so to speak, flat wire chrome silicon springs are the best way to go.
I simply buy replacement Colt parts from Colt and change them out whenever necessary. That means about every 1K-2K rounds down the pipe. Some people do it more frequently, some less frequently. I don't shoot anything else except factory 230gr FMJ Winchester or Remington.
If you notice any failures to feed or extract, that generally means you have a weak spring, assuming the magazine functions correctly. Yes, the extractor is a sort of spring. Most failures are going to be magazine and ammunition related.