First and foremost let me ask you this question... How will you live your life if you find out that there is no heaven? Will you continue worshipping God? Going to church? and observing other virtues? If you will live differently, then it means that you are worshipping God for the wrong reason.
The underlying reason why we should worship God is because he is our Creator and we owe our existence to Him. The Bible says we love him because he first love us. As a result our His love for us, we respond by loving Him back, and that is by worshipping him.
It is after all this that he will then reward us with Heaven for being faithful to him. Many people worship God for the wrong reason....
What do you think?