Welcome Chris from E PA. This is what happens to quilts. They get passed along to the next keeper. It is your turn to enjoy them and share them or sell them if you want. I think you have been gifted a wonderful collection and have no need for feeling bad about having them.
I do hope you can post pictures of them.
I would suggest taking a few of the ones you don't want to an antique or second hand shop. They will put them on consignment for you and you can maybe make a little money from them.
You can also look up an estate appraiser. They will help you figure out their worth.
If there are any that are appealing to you, keep and enjoy them. Thank the person who passed them on.
peace