What is it about the word 'SALE!' that draws us in? Even if it's not a good sale it seems like human (or at least female) nature to see what is on sale and how good of a price you can get for something. Almost a contest to see who can get the best stuff for the cheapest.
To win the my-stuff-is-cheaper-than-yours contest you have to be able to go the distance. Back of the store off-season clearance, anniversary sales, and (my favorite) craig's list if you don't mind getting something used.
There is an urge in our household to tell people how little we spent on everything we get. Someone comments on how great our table is- Guess what? Got it from my parents' move cause it didn't fit their house. The frames? Craig's list. Pillows? Made them out of some fancy fabric found in the clearance bin. You get the idea.
Part of this has to do with the fact that we are students and while some cultures try to out do their neighbors by bragging about prices, our culture is more about bragging about getting Pottery Barn stuff at an outlet store for 60% off. (I know you're jealous of that one.)
To predict the future, I think we have this bargain-finding gene in us. I don't think the amazement of having an income will deter us much from always living for the sales.
P.S. Nordstrom is having their huge anniversary sale right now. Maybe in a few years we can afford that sale!