practical

Just a few questions I am wondering about, at this point in time...
Whats the importance of practicality in life?
Why do we have to grow up when all that maturity doesnt give any pice of mind?
Why cant we just remain kids and be worriless beings for ever?
Why does life have to jolt you back into problems and worries when everything seems just so perfect?
...dont get me wrong and dont jump into the conclusion that this gal has gone nuts and its time somebody put me in asylum...i know i am not crazy( i know No body agrees that one is crazy, but on the other hand how else does one state that one is not crazy? :P)
Anyways I am in this vacillating state when one second everything seems just right and the next second i seem to be cound with problems everywhere? May be it is life's duty( Is it a thing? does it have duties? Just wondering...) to remind us from time to time that it is important not to get carried away, not to rely on anybody other than yourself...and the most important..be firm and practical and when you learn this..you would be happy...:)
Anyways....it feels fine now...huh!!