Where'd you get that silly idea? Spanish is a terrible language: it's one of the least information-dense languages on the planet, requiring a ridiculous number of syllables to state the simplest of ideas. It's not even a particularly nice-sounding language; French and Italian are much nicer-sounding languages in the Romance group.
Spanish also doesn't have much prestige; Spanish-speaking countries don't lead the world in anything except maybe crime rates (El Salvador and Honduras in particular have the highest murder rates in the world, and are likely more dangerous than Syria). Spain the country doesn't even have a single language (Castillian is one of 4 languages there) and has the "honor" of being the only Western European nation to live under a brutal dictatorship until only recently. Now that the dictatorship is gone, it's splitting apart at the seams. And what does Spain do, anyway? France builds jumbo jets, cruise ships, cars, helicopters, etc. Italy makes famous exotic cars, high-end fashion clothing/accessories, high-end foods, etc. The only things I can think of that Spain makes are olive oil and some wines. Compared to their nearest European neighbors, they're an embarrassment. And the most prosperous region in Spain is one of the autonomous regions that has a different language (though related, like all Romance languages), and which wants to break away.
Even Spain's colonial history is terrible. There's plenty to criticize about how the British treated the indigenous populations in the Americas, but they were humanitarians compared to the utter depraved brutality and genocide that Spaniard Christopher Columbus and the later conquistadors like Cortez inflicted on the mesoamerican peoples.