Artificial forests are bound to be less resilient than wild ones.

The lack of biodiversity is a major concern, since we often take shortcuts by planting cuttings, which are genetic clones, or by using an initial pool that isn't sufficiently diverse.

An artificial forest is better than no forest, off course, but wild, ancient forests are more precious, since they are living DNA libraries.

I was providing data for your

> I doubt theres a forest in Europe that hasn't been touched by man.

There is some but its extremely rare. In Germany you for example have the Hambacher Forst, where parts are as old as 700 years. Its scale is however lacking

https://www.dw.com/image/45302299_401.png

Generally you have "untouched" as in oldgrowth/primary forest and not being a secondary forest, which takes a few hundred years.

Sorry, I thought you were providing your definition of natural forest