What's the point???

What is the point in opening up to someone, getting to know them, care about them when in the end no matter who it is or what they promise...they leave? There's none. I am so tired of being hurt this way. I am so tired of opening up and thinking this person will be different and in the end they are all the same. They always leave. Always. My dad left, and my stepmom, almost my sponsor though she is being distant now. A therapist, Val, Ann, and now Jill. when I say now, yes like hour ago. She told me that she gives up and can't handle me right now. I immediadly start crying saying I knew it. I can't keep opening myself up to people just to get ripped open in the end. But for some reason I always allow it, well this will put an end to it. I'm going to leave everyone. Decision made for them and I get out of feeling this pain, this abandonment.