Is there a choice to live in a concentration camp?

If they leave their homeland, they can never return while Israel keeps them from returning. So they try to have families because they won't be driven from their land.

You are asking the wrong question though.

Why is Israel trying to bring about the destruction of an entire people?

In the present Convention, genocide means any of the following acts committed with intent to destroy, in whole or in part, a national, ethnical, racial or religious group, as such:

1. Killing members of the group;

2. Causing serious bodily or mental harm to members of the group;

3. Deliberately inflicting on the group conditions of life calculated to bring about its physical destruction in whole or in part;

4. Imposing measures intended to prevent births within the group;

5. Forcibly transferring children of the group to another group.

The only one Israel isn't trying to do is number 5 and that is probably be because they don't want any Arabs of any sort alive.

Just in case it isn't obvious, this has nothing to do with Judaism as a whole, it is the Israeli govt that is to blame not the religion itself.