The Buddha said that the nature of samsara is suffering, but he did not repudiate totally the idea that there is relative happiness in samsara either. The Buddha often said that one can enjoy the karmic reward of celestial beings and humans if one refrains from killing, stealing, cheating, etc. and engages in virtuous actions as much as possible. The blessed reward of celestial beings and humans signify relative happiness, not suffering, in samsara. However, such happiness is only on the surface, temporary and relative; it’s neither lasting nor ultimate happiness. This is why the Buddha exhorted us on many occasions to be mentally prepared so that we can garner enough courage to face every phase of life.

~ Depicted from "THE HANDBOOK FOR LIFE"S JOURNEY : On The Three Poisons - How to Handle Desire"