why...

why do ppl make blog???
why r there only boys n girls???
how did they create internet???
how did they think of wireless???
how did human create language???
why r there gays or lesbian??? i noe i noe they made their own choice but y did they make it?
if u noe the answer for this plz answer...=) i jus wan to noe
there would be a prize...if u believe haha