is marriage relevant with two family?

Is MARRIAGE relevant with two family?
this is the question that keep on playing in my mind.
my brother asked me...
do u really wana be with him?
since his family background is exactly the same with urs?
do u really think that he will suit u?
u need to backup all the things once u had married with him! marriage isn't dat as simple as u think! marriage consider two families that need to combined! once u had married, a lot of things u need to fufill or manage... (as u already knew dat his family background!)
if u aint going to married with him, then why u want to be with him? aren't dat is just a waste of time?
this stupid question keep playing in my mind...
i was exhausted...
i nearly collapse..
the relationship between us nearly crumble.
i can see that...
u work so hard but still can't fufil my desire.
i was selfish, i am greedy to have more hope on u!
i count on ya... and pls hope that u won't failed me!! and never fail me!
pls...
DUN U EVER FAILED ME..