why???

1. why did we need food?
2. why do we have to study?
3. why can we fall in love?
4. why do we have enemies?
5. why do we become sad?
6. why do we happy?
7. why do we have to be angry?
8. why is everything is so complicated?
9. why do we become so stupid sometimes?
10. why is there 'PALESTIN' at Gaza?
11. why are we so mad?
12. why is everything is not right?
13. why should we love different things?
14. why is our life is different?
15. why can we be rich?
16. why can we be poor?
17. why is it fine?
18. why is it not fine?
19. why do you cry?
20. why don't I cry?
21. why is there something not right?
22. why do we have fun?
23. why do we been protected?
24. why is you having fun while I'm sad?
25. why is there so many thing to ask or starting a sentence with 'why'?