Push Up Bras, The Greatest Lie Ever Told By Your Average Woman

Recently, Victoria's Secret and many other bra makers have started making something even more extreme then a push up bra, to replace tissues and socks and silicone inserts.
Traditionally, a push up bra adds a cup size, making you seem bigger, but these new bras can add two, or even three, cup sizes.
My real question is, why?
Just.... why?
Isn't the point of showing off your boobs (edit: occasionally) to get someone in bed? And isn't part of getting someone in bed through that process... getting nekkid?
And letting them see your real boobs? Which will have magically shrunk?
The only good thing I can see in these new push up bras are you can literally let someone punch you in the boob, and you will be totally fine. Also, you could just run into an attacker, breasts first, and knock them out. One time at work, I dropped one on my head, and it gave me a headache.
Maybe it's just because I have large breasts, but I can't see why we would need to mislead perfectly nice strangers into thinking we have bigger boobs then we do. You can trick someone with one cup, but two or three?
Come on.
HAVE BOOBS.
YOUR BOOBS.
NOT BOOBS WITH FABRIC AND JUNK.

(Edit, due to below comment. This post is due to my frustration with women who purchase these kinds of bras for the wrong reasons. Women who choose to wear these bras to ensnare men, and then express confusion with the mans reaction and confusion, with me while they purchase more of these kinds of bras, make me feel rather frustrated. The boobs you have are wonderful, and I just wish everyone could see that. Thank you, anon, I forgot to make that clear to my readers. =) )

(OYO)
Booblogger rant over.