Building a new PC: Should I get a new HDD?

[asdfguy]

I have a new SSD and two HDD's that are 4 years old. I'm now upgrading my PC and I was wondering if I should get myself new HDD? I used these hard drives a lot. There have been times where I just left my PC running for days.

Any thoughts?

 

[Daniee]

If they are still good, use them. I've got hard drives they are 6/7 years old still going fine.