is it still like new due to the lack of birds you have put in it??[:D][:D]
Oh, I've put plenty of birds through it. However, actual use does not affect it all that much. It's the days and days each season that it gets battered about in the bottom of my pack that would do it in. However, I happened to have a nylon sleeve for it that protects it. The only maintenance I've done on it is rinsing out with the hose after each use, and a coating of waterproofing when I was doing a tent floor about 10 years ago.
It also does duty in the Spring and Fall when I'm going out to put out or retrieve ground blinds. We also use it in during camping season to carry all the ponchos.
The big destoryer of light nylon is exposure to sun. I had one just like this that I bought for the first wife when I bought this one. She let it sit on the front seat of her truck for a summer and it was bleached out and fallen apart by Fall.