I love the elaborate quilting on show quilts! Will I ever do it for my bed quilts? No because I don't have the talent and I like bed quilts with a bit of fluff. As for the quilt lasting? All that quilting is going to hold the quilt from moving and wear like iron. Think of the antique tapestries that are still around.
I have seen some machine quilted quilts that the quilting overshadows the quilt and I don't like that. I have also seen simple patterns turn into breathtaking quilts with the quilting.