Good design but not indestructible

I purchased this chair it's been ten years and I had to use it a dozen times by sessions of 10 days. the tubing has not given sign of weakness, but the fabric of the seat starts to let go, I have to sew the aunt with coarse thread but I'll have to change the whole canvas.
If you are like me thin 65 kilograms, all your weight rests only in the bottom of the canvas, if you are larger your weight will be borne in part by the tubular structure
We buy the French brand thinking quality, but there is always something that finally let go.