Dear Qureshi2K,

If u thinks with logic or reasonably, u can reach the answer for ur qstn.”the practical example of multi marriage”
Islam never stands only in theoretical philosophy.
Islam’s teachings are purely for practical life.

Hope that matters cleared from that speech of Dr. Zakir naik about the “multi marriage”
Why I was posted that video link, coz, he is a well speaker and he can convey easily rather than me by the understandable words and coatings from the various scriptures (if need).

Even though I ‘l try to explain the practical situation about this.

Just take the life of u. (for example only)

If u married and u r happy with ur wife and kids.
Those intial periods just after marriage will b very interested and pleasure full.
But later that will decrease gradually…(Not theory, Its practical)
At that time if u got another one chance to have a relation with somebody, u never think about ur wife or kid if u r not fearing GOD.
U wil go for the other relations unknowingly ur wife.
Or,
Unfortunately, after ur marriage u realized that ur spouse not matching u by the thinking, by the idea abt life, or she s not respecting u, or she s not ready to live according to ur desire, or irritating/insulting u always.. or she is has lot of bad characters , rude behavior or she ‘l go for outing alone, coming only late night, not obey u…like that…like that……
What u will do????? (By practical)

Will u stay all ur life with her? And r u ready to spoil ur life by saying “Its my fate”??
Practically u cant……..!
Surely u will go for the wrong relationships, Pubs, dating and all such immoral activities…for fulfilling ur desire (As westerners doing. It’s practical)

So Islam giving u a chance to escape from such a situation by Divorce. (If happened like that).
Its not a simple procedure.
If u study about that, It’s a longer process.
In that period, ur wife can admit the troubles she made on u and ready to change her attitude and she may came to a new life with u as a good wife. (Practically possible)
(U can c these in family courts by the counselors)

Another one matter,

Statistics says female population is very much higher than male all over the world.
So how can be possible a married life for all females. (think practically)

If ur sister, or ur daughter….If they r not getting anybody to marry…
What will happen????
surely they wil have some relationship with others or they want to go for public to fulfill there desire.
Nobody can live virgin through out the life , according to the field experts ( we all getting the news and stories that happening daily in our surroundings and throughout the world)

So it is Social injustice.

So Islam giving the solution for that by the polygamy. One who can afford another one wife and can fulfill her in all aspects, then he can do..
But only one thing is do justice between them.
By this v can avoid such a evil and dirty practice of multi sexual partners (happening among westerners).
To avoid a great trouble Islam advising to do so.

Allah Says in Holy Quran 2:216

Perhaps you May Dislike Something Which Is Really Good for you or Like Something Bad for you, but Allah Knows(What Is Best for you) & You Do Not(know)