Help or not help??!

Did you met this kind of situation?
when ppl asking for help from you, if you help them, you will suffer or ppl beside you will suffer. If not, The ppl who need help will suffer.

For myself, I always keep this concept, I'm willing to help when:
1. I'm capable to do it.
2. It won't bring any negative effects to the ppl beside you and you urself. (family, life partner, close friend...)
3. the person who need help is not the person i dun like/hate..or in another word is the person is worth to be helped.

For point 2, it usually caused me misunderstand by ppl tat I'm selfish, not helpful. Yup, I don't mind, as long as I can protect myself and the person I love/like. I'm not so generous to be a Mr Niceguy. Just call me selffish, cold blood as long as I dun make any silly move to help some1 and hurt the ppl I like direct/indirectly.

For point3, somebody just not worth to be helped. Once you help them, they will think that you have signed a life long servant contract with them. When they need your help again, they just think that it is for granted! No appreciation even a Thank you even though I dun really care bout that. But what I hate most is
if you refuse to help them, they will blame , curse, push all the responsibilities on you. Damn, they never think that help is a appreciation of friendship/relationship and it is not a must, in vice versa, we never do anything wrong for not helping people.

Met a situation recently, some1 ask for help from my family, I am the one to say no as it will bring negative effect to my family...But my parent willing to take some sacrifice just because some relationship issue, At last I witness my parents have to suffer which make me very sad as I am the 1 to help them. After the incident, I just told my parent about my feeling and just persuade them to say no next time! but they just runaway fromthe topic and choose to ignore me.

If you met this kind of situation, help or not help?? What says you!