can anyone give me a single valid reason why half the people in the world are opposed the learning latin?

I must agree with Profuy. That is certainly a valid reason. Learning ancient or dead languages is certainly useful if you are yearning for a syntactical understanding of Romance or Cryllic languages, but it's not pragmatic in a "see the world" kind of way.

I of course think that learning Latin, Greek, or Sanskrit is invaluable intellectually and offers a major window into how languages are formed and helps improve your vocabulary overall with the knowledge of roots.

I may be a little biased, having learned Ancient Greek and Latin. But I can can certainly understand why people are opposed to spending hours and hours learning a language that seems to have few real world applications.

Because it's a waste of time learning a dead language. I'd rather learn a language actual people speak. And don't tell me that Latin is useful if you're planning to learn a Romance language like French, Spanish, Portuguese, etc, because it's definitely not.

i dont think its a waste of time sure the replacement for latin is now spanish but if you learn latin and speak it it sounds beutiful. i dont actually concider latin a dead language even if i speak spanish. but now its mostly used for science and its not spoken. people do speak it but not big enough cultures or places to say its a language. which i think its retarded