What do we really understand?

What do we really understand?
Do we really know what we are living in this world for?
Do we really noe the purpose of even surviving in this world?

Have we ever tot of wad's our meaning in life? You see...we are born then lives for multiple of tens years and then we juz..go...so WHY did we even come in the first place?
Not much use isnt it? We come then do wad we want summore our parents still dun really let us do wad we want =.= then everything comes to an end summore when u go too early people still feel sad for you =.=ll so why shld we live??? I cant solve it...anyone care to gib me some replies?

One more thing, more to flirts anyway =.=ll
What do you know about 'love'??
I am rather confused by it le anyway...
Im sure a lot people cant really give me a satisfying answer if he/she really asks themselves that, right? If you can find such an answer, then mind telling me? Can discuss discuss...help me solve this too...
See ar, some people think that like someone is wan to be wif him/her, some ppl think is to just have someone as our company etcetc...The worst answer I've got that really made me very angry ar is when i ask him 'why start stead so early' coz i curious ma...
Then he reply: 'to get experience ma'
OMG I WAS LYK WTH!
Then the people he stead wif are wad? guinea pig ar? he doing experiment ar? very guo fen lo!
Haiz...another question...

How do you noe whether u lyk someone? I used to think i noe but now...i dun think so anymore le la i dunno anything about it anymore...really dunno le...
and one last one:

How do you differentiate friendship and love?
How do you noe which side it is on?
How do you noe where's the line?
How do you stand at one side and not cross over?

Nvm think too much haha ^^ sianz..

*sigh*