There are more trees in the US than there were in 1970... The first "Earth Day".
There are more trees in the US than there were 100 years ago. A LOT more.
There are more trees in the US than there were in the pre-Columbian era. Before whitey. More than 1500, 1600, 1800, 2500 years ago. A LOT more.
Pick a number, choose your century, decade, epoch, whatever. Google it up. The biggest threat to trees now is poor management and lack of natural undergrowth fires. That's why our lovely NC pines are getting bug-infested and therefore quail populations are shrinking.
I woke one morning to the sounds of machinery, and a plot west of me was being clear-cut, and I admit I was kinda bummed, until I realized that because of it, I now have a much better mountain-view from my bathroom window. I personally get tired of feeling like a bug in a shag carpet, and appreciate some long-range views mixed in with the thick Eastern woodland.
The world needs ball-bats and pianos too.