Why,Joss,why??[spoiler-ish]

I saw Age of Ultron and all I have to say is: why??????

Natasha was ruined. Her entire characterization from the previous movie went downhill and the horrible implications about her are just UGH. 
And Pietro! what did the poor boy do to deserve such a fate! 

Unless Whedon and Feige retcon the utter BS that happened in AoU,I'm not watching the next movies.