Unsure of everything

I had a recent scare with my only full blooded brother.  I guess he had a Grand Mal Seizure a few days ago and didn't go to the hospital.  Apparently he's been having small seizures where they weren't so physical.  He refuses to go to the hospital even tho he's been having kidney problems as well.  I've argued as much as I can and of course he's as stubborn.  
Along with this I've been trying to figure out my own issues within my life.  The boyfriend who lacks the common sense to accept responsibility of life.  Of his actions or inaction's.  He gave me the ultimatum to move back by Christmas but now there isn't an ultimatum but can't tell me what he's going to do try to make things better.  If I bring up the conversation I'm pressuring him and/or all up in his grill.  There's no definite answer to what is going on with us.  He's talked about plans for this summer a trip to take the kids to Six Flags.  
I've been easily frustrated by all the mixed up crap and then my brother that I've been contemplating what the point of this life is.  I mean to go thru life dealing with this crap.  What exactly is the point?  I don't understand and I'm not figuring out thru my readings in books.  I haven't found any concrete answers to any of my questions.  I have no idea what path to take and I know I need to make a decision soon tho because this not know where to go or what to do is really getting me down