Do you think Zoos are a good thing?

yes and no the why i said yes is because they save some of them and no because i hate seeing animals cage up

I think so. Some may rescue animals and breed them. Also heal the rescued animals.

Zoos have both advantages and disadvantages. In one way they are protecting a specie from being endangered but in another way..they have got no freedom to Roam about but their habitat is actually a forest ...

They are nice and all but animals deserve to be in their normal and natural habitat

Well they are good in the sense it gets people to care about animals but it's sad to think that these animals have to live and die there because they can't go back to the wild.
So both I guess

Depends on the treatment of animals
As long as they're being in an environment close to the wild as possible if they stay perminatley, it's ok.
If staying temporarily, make sure they don't get to adjusted.
As long as they're in good hands, though.
And there's not to many.