One can say with emphasis that every pleasure has a relevant pain attached to it. So long as one has no wealth, one is worried over poverty; if suddenly one gets riches tomorrow, one is worried over preserving the same. Unalloyed pleasure as such is a rarity in the world. Society is never thoroughly happy. Moreover, world betterment is never permanent. The ideas of betterment change from time to time and every good carries some evil as its appendage. It goes on ad-infinitum. Life is fine blending of joys and miseries. Bearing this in mind one has to participate freely and willingly in this gymnasium of the world according to time, ability and strength. As things stand today one feels something should be accomplished or introduced as good now. But every action has a equal and opposite reaction. Thus one good ushers in another evil. One has to think about it very seriously at the outset. That is why the Sanskrit Subhashita insists:
Upayam chintayan prajnau apayamapi chintayet
(The wise man thinking of the remedy should also think of the adverse reaction).