I think you meet a lot of different people in this world. There are those who use people and discard them after their usefulness has run out. There are those people who have been treated badly in life and so treat people just as badly. There are people who manipulate others just to get what they want.

Somehow, it's really sad that there are people like this in the world.
It may seem funny but I think that there is a period in everyone's life where they are 'ripe' for the plucking. And if they aren't plucked, they become spoilt for the rest of their lives.
For me, that's really sad. = (