I hate zoo`s! I only been in a zoo for two times in my life. Once when I was a child and the second time it was last year in Barcelona, and I was so disappointed that I promised myself that I won`t go to any zoo ever again!
Of course, you all are right. The animals should live in the wilderness. But this world is not ideal, is it? Have you ever mentioned what we, the humankind did with it? We deprived the animals of the best places for living, right? Lots of species are destroyed... Taking this into account, the zoos are the lesser evil, as it seems to me... Moreover, have you ever read "The Drunken Forest" by Gerald Durrell? ))