God formed us with the ability to have an imagination so we should use it. Just because corrupt people have used their imaginations for ungodly things doesn't mean we continue to give up ground.
If the mind, with it's ability to imagine, can be condemned because someone somewhere imagined the wrong things, then all other body parts used as instruments of evil by others are no better.
Starting to seem unreasonable? We need to take back ground, our God-given ground, that are our gifts to glorify God with.
The first and greatest commandment includes loving God with all of our minds. Use your imagination to love God, to love others, and to devise ways to provoke one another to love and good works.
Am I wrong?