I don't think the Muslims would appreciate us demolishing the Dome of the Rock to make room for it.
In more extended form, since the destruction of the second temple Jews hae never been in control of the land that the temple has to stand on (temple mount), or at least never been in enough of control of it to be able to do what they wanted with it without causing a huge war that would kill a sizable chunk of the world Jewish population. Even if we did control the land and could build on it without upsetting a few billion people, I think a lot of the details about how exactly to build the temple and run things within it, have been lost in the mists of time. Due to these problems, most Jews who believe that the temple will be rebuilt think that it will only be rebuilt when the messiah comes, there's world peace and everyone realises that we were right all along so they don't mind us rebuilding the temple.
We've managed quite well for nearly two millenia without a temple. Quite a lot of Jews aren't actually that keen on having another one, particularly if it involves animal sacrifices.
no subject
In more extended form, since the destruction of the second temple Jews hae never been in control of the land that the temple has to stand on (temple mount), or at least never been in enough of control of it to be able to do what they wanted with it without causing a huge war that would kill a sizable chunk of the world Jewish population. Even if we did control the land and could build on it without upsetting a few billion people, I think a lot of the details about how exactly to build the temple and run things within it, have been lost in the mists of time. Due to these problems, most Jews who believe that the temple will be rebuilt think that it will only be rebuilt when the messiah comes, there's world peace and everyone realises that we were right all along so they don't mind us rebuilding the temple.
We've managed quite well for nearly two millenia without a temple. Quite a lot of Jews aren't actually that keen on having another one, particularly if it involves animal sacrifices.