The Buddha once told his monks that there were four kinds of horses. The first (very good), upon seeing the shadow of the whip, is startled and follows the wish of its rider. The second (Good), startled when the whip touches its hair, & follows the wish of its rider. The third (poor) is startled after the whip touches its flesh. The fourth (Bad) is awakened only after the touch of the whip is felt in its bones & its hurt badly.
So there are people (very good) who are already awakened about their responsibilities towards their loved ones, some people (good) learn about their responsibilities & feel the attachment with their loved ones when they see someone at distant loosing their loved ones, the Third ones realize the importance of love when they loose someone close to them & the final (bad ) only realizes when everyone close to him abandon them for being alone all through their life & suffer the pain of being lonely.
We need to choose, which one we want to be.