wuthering heights-heathcliff and catherine

This book is fairly difficult for me to get through, and I think it is because I do not like any of the characters.  There is no real character to root for, or to hope everything works out for them.  We are talking about how Catherine loves Heathcliff more then Edgar, and I think it is both of their faults that they do not end up together.  For some reason that I cannot comprehend, Catherine chose to marry Edgar instead of Heathcliff because of class.  I would not agree with it, but I could see this logic if they were in some city, or a big community, where they were being judged by friends or had some sort of public status.  But they are secluded in this place, so it seems absurd to me to take an insignificant class status that her angry brother labeled Heathcliff with, and make her decision based on this.  Then when Catherine was leaning towards Edgar, I feel like Heathcliff could have won her over, like she almost wanted him to go after her.  I feel like if he was persistent, and told Catherine how he felt, then she might have chosen him; maybe they would have run away together or stayed there and tried to be happy together.  But Heathcliff is always brooding and angry, and he just runs away from the whole situation instead of doing any positive action for getting Catherine.  I dislike both of these characters, and am not sure the direction I hope this novel goes.  We see Catherine die when she has the baby.  At the beginning of the novel Heathcliff is alone, and realizes the love he lost, which is evident by him pleading at Catherine's ghost.  This is almost a just enough ending for me, and do not really know what will go on the rest of the novel.