The institution of Marriage will never die as long as there are Muslims and Christians on this earth cos it is part of the religions. Some of us that are married can authoritatively tell you that, yes, married couples do have some problems here and there. The truth is, in normal marriages (over 70% of marriages) the ratio of the "good sides" to the "bad sides" is 80:20.
As someone already said, our disposition to the issue really matters.
... it is really good to be married. Very good if there is real love between the two of you. Excellent if you determine to keep that love going.
LOL!