It's a great comfort to have a substitute family to come home to为什么最后用to

It's a great comfort to have a substitute family to come home to为什么最后用to
It's a great comfort to have a substitute family to come home to
为什么最后用to

It's a great comfort to have a substitute family to come home to为什么最后用to
Also when I miss my family ,it’s a great comfort to have a substitute family to come to.
原句应该是这样吧,你是不是写错了?
come to a substitute family嘛,当然要to !

come sp. to
宾语因为重复被省略