Quintos,
Let me recommend that you move items
1 and 2, having to do with American culture into the Non-Spain Discussion forum, out of respect to our host, MM, who asks that we keep the topic of the thread in the correct category. By doing so, we will feel free to post our responses.
In respect to your concern about the recent waves of immigration into Spain, which as you say make no sense to you. There is one item about tourists that does not make sense to me and I would ask you to expand on this.
Generally tourists usually stay at hotels or rental facilities, so I do not see how they would add to the permanent housing problem in Spain. Or do you mean, other Europeans moving to Spain and buying homes there, thus diminishing the number of available homes?
Saludos,
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The world is a book, and those who do not travel read only a page.
--St. Augustine (354-430)