abuse children

These days, I have seen a lot of news which were related to abuse children. I have this kind of news very much, because I think those parents are irresponsible. Those parents loved each other, and then they had the baby. However, after arguing or divorce, the children will always be trouble to their parents. More than that, when the parents feel unhappy or angry, they will hit the children instead.
I feel so confused about that, because the children are their love, why can they abuse their own children? The children are their own responsibility, aren’t they? But after discussing this issue with my friends, we figured out couple of possibilities. First of all, maybe every time when he/she sees the children, he/she will think of the other one, then he/she will get angry. So he/she will abuse the children. Last but not the least, maybe the single parent faces the heavy stress of economy, so it is really tough for him/her to raise the children. Then, he/she will think the children are big troubles for him/she.
Although there may be a lot of reasons for parents to abuse their children, I still think that is wrong to do that! Children are always the sweet burden for parents, so if you are not a responsible person, please do not have the children! Or abuse children will be a big problem of the society!