For my part (and, I assume @TNVolunteer73 feels the same), the "negative" of HELL does not motivate me to be good. To be honest, the "positives" of Heaven to not really motivate me.
The MESSAGE and LIFE of Christ, as well as His comfort, love and guidance, in THIS world, are the greatest gifts.
Other than that, I share TNVol's idea that God simply offers us a choice: Accept Him, and be with Him, in His house. Reject him, and spend eternity in the other house.