If you knew there was no Heaven, would you still try to be "good"?

For theists of different faith-groups the answer to this question may greatly vary. For Christians, heaven is not pursued because it's paradisaical nature, rather it's pursued because of the Person who dwells there. As Christians, if heaven did not exist it would follow that God did also not exist. Humanity appears to be inherently destructive, therefore if God did not exist and all Christians knew this, it would be futile to be "good" to achieve some intangible goal. Christians strive to be good to please God and this has nothing to do with trying to be "good enough" to get into heaven.