Well, English seemed to be a part of America's culture, from the very beginning. So, the use of Spanish seems wrong. While I'm for the use of Spanish as a second language, it's just wierd.
Don't use all. I'm sure there are hundreds of Britons who only speak English, Irish who only speak English, French who only speak French, and Germans who only speak Germans.
I have a problem with a wide use of Spanish in America because it threatens our culture. The Mexican/Nicaraguan/Panamanian/Costa Rican/Cuban/Guatamalan/South American illegal immigrants use Spanish as a first language, and claim it as culture. While that is true, it doesn't mean you should speak it all the time. I can claim a Irish heritage, but does that mean I will be allowed to use Irish Gaelic often? No, and that is because they won't understand me.
If English becomes the official language, you HAVE to speak English often, and if you have a problem with this law, either go home and use your democratic rights or become a legal citizen and vote against it.

I'm drawing this off topic, so I'll take it back.

Why is the strict enforcement of language (Academie Francaise) bad? You claim stagnation and inability to adapt, but why not use a national board to create a word that cover the new world, and have it fit perfectly into the grammar and vocabulary structure of society?