what effect does gregor metamorphosis ultimately have on his family ?

Gregor's family becomes increasingly isolated from Gregor. Really, it is only his sister Grete that attends to him and soon even she looses interest. The family actually becomes more self-reliant, even happier. They get jobs, earn income and carry while Gregor isolates himself in his room. Check out this GradeSaver link as well,

http://www.gradesaver.com/the-metamorphosis/q-and-a/how-does-the-family-effect-gregor-through-out-the-book-and-cause-him-to-become-more-animistic-at-the-end-of-the-book-68371/