WHY

 in some matter, 

it's good to ask why,

it able us to know better,

to understand,

to explore more,

in some other matter,

it's better not to ask why,

we'll get tired,

to hear those reasons.

just do anything you can,

fix anything wrong,

involve if there're problems,

accept what you get.

stop asking,

stop complaining,

just contribute something,

p/s: Will never ask anything, any more