I agree with paying the debt. OP, you sound just like me. I often asked "how bad can it be when I have 6yr old debt on my credit". I really thought it wouldn't be a factor.
Well here I am still 6yrs later, and it's still effecting me. In the process of getting a mortgage so I'm taking care of everything . I do have 4 collections that are scheduled to come off in May and September, so those I won't pay.
Once I handled one collection, my mortgage scores jumped 50 points.
Sometimes it takes us to actually "see" it to know if it's worth it.
Good luck on your credit journey!