The confusing word - "WHY"

Have you ever think about the below lines?  Have the answer of your own?  If yes, then please read below and have headache... what I have got, after reading this (as I done because I have used my brain to solve it, not all but some of them) : nice one you will enjoy and if answer write in comment:

If swimming is a good exercise to stay fit, then why WHALES are FAT?

WHY is that everyone wants to go to HEAVEN but nobody wants to DIE?

Shall I say that there is racial discrimination in CHESS as WHITE piece is moved first?

In our Country, we have freedom for SPEECH, then why TELEPHONE BILLS?

If MONEY does'nt grow on trees then WHY do BANKS have branches?

WHY does a round PIZZA come in a SQUARE box?

WHY does'nt GLUE stick to its bottle?

WHY do you still call it a BUILDING when its already BUILT?

If its true that WE are here to help others, then what OTHERS are here for?

If you are'nt supposed to DRINK AND DRIVE, then WHY do BARS have parking lots?

Have idea.........???