In dealing with a lot of people, one thing I notice that comes out is selfishness. Like, when I explain to someone that something is bad for you at a certain time, and causes inconvenience if not outright problems, they may "yes me", but then if I compromise and help them, they go on to "milk the time" for as much as they can.{Instead of appreciating that I compromised with them, they take advantage.} I figured out that this is a type of selfishness,because what they're really saying is, I want what I want{emphasis on the word "I"}and who cares about you?{they also lie somewhat, because they "promise" if I give in , they'll "cooperate "with the time,then "fudge it."Other forms of selfishness I see is someone pushing for themselves at the expense of others,not taking no for an answer,saying what they want about you, but trying to "put the gag order" on you when you defend yourself.Soooo….is selfishness a part of the fallen nature?In 2 Timothy we read,"In the last days people will be,and one thing we read is "lovers of themselves'.Also, the Golden Rule,"Do unto others as you would have them do unto you". {Unless these people are masochists, I would bet they wouldn't like these things done to them.}So they're breaking the Golden Rule.So, is selfishness part of the fallen nature,and a sin?I'd say so.Yeah?