whether or not a subject is hard or easy is...entirely subjective; just because one person finds studying chinese to be hard, doesnt mean it's encessarily the case.
in my experience, the major mistake ppl make when they try to learn Chinese is that they try to treat it like learning german or french or any of the romance languages;
it's a completely different language system, and if people can't grasp this basic fact and
change their learning processes accordingly then of course they're going to continue finding Chinese mandarin to be hard.
ppl also say organic chemistry is hard.
bull

,
they jsut havent gotten their heads around the concepts, and likewise, once you understand how chinese works, and grasp the patterns-and all languages have patterns-then you're set.
in fact, Chinese grammar is very very similar to english grammar and there are no tenses.
whether or not chinese mandarin will be more universalised remains to be seen, although mandarin classes are growing in popularity in the USa, Australia, russia and much of the world.