Why did Jonas feel that love was risky?

Jonas alluded to the danger and risk that he saw in things his own community had outlawed..... things like the fire in the fireplace and the burning candles. Thus, Jonas' comment doesn't actually mean that he believes love is dangerous.... he sees the environment as dangerous. Jonas' also thinks about how nice it would be to have grandparents, but then questions whether or not the elderly can take care of themselves, or be taken care of by family, as well as they are cared for in his own community.

"Jonas hesitated. He wasn't certain, really what he had meant. He could feel that there was risk involved, though he wasn't sure how. 'Well,' he said finally, grasping for an explanation, 'they had fire right there in that room. There was fire burning in the fireplace. An there were candles on a table. I can certainly see why those things were outlawed'"