前置詞＋関係代名詞

homes are idealized as the places to which we would like to go back when the world of industrialization becomes too hard to bear.
　

上記の例文は前置詞＋関係代名詞(to which)で後ろが何も抜けてない完全文になると思うのですが、we would like to go back って何も抜けていない完全文でしょうか？