I tend to be attracted to people troubled in some way, not that I like seeing people troubled by things...but with a lot of issues I have I can sort of empathisize/sympathsize, so I guess I feel like I can relate to others with troubles as well...better than I can relate to 'normal' people who don't really know what its like to have mental health issues, or just a rough life in general(and mine isn't that rough compared to some, but no walk in the park).

I have been used by people, and its not been limited to the 'troubled' ones, so I do not think hanging out with more 'normal' people really means those people won't use you...that depends on the individual you are dealing with. There are essentially normal people I've ran into who are fine but then a lot are pretty judgemental about things outside the 'norm' or percieved norm or whatever.

I do not see it as a negative trait, though you do have to be careful about overdoing it trying to help too many people out with more than you can for instance. Like you can't fix everyones problems for them but you can still be supportive to people and be someone they can talk to or whatever.