Wwe poor feud's!!!!!!!!!!!!!!!!!?

wwe really don't have a clue how to start and build a good feud anymore, take the cm punk and umaga feud for an example, it started when punk was facing edge then at the end umaga randomly attacks punk for no reason at all, as for big show and cena, the last man standing match between cena and edge was a great match but big show had to ruin it by attacking cena for no reason aswell, i miss the old wwf feuds such as hhh and austin which started because of the mcmahon story, kane and undertaker which started due to their parents death and paul bearer telling undertaker that kane is alive