Nononono, it's not selfish!!! Every one who has a hobby does it for her/his own joy. They don't ask men who 'play' with electric trainsets why they buy another train LOL.
I know wih quilting it's fun to make a quilt, but it's a lot of fun to enjoy it too. You can put it in your (bed) room and change the quilts after a while, put these in a closet and take some others out, so your room loks a bit different every time you do this, esp when you add some other items in the same color range.