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monkeys, for the most part, live unclothed in trees in jungles along the lower latitudes.

Humans, for the most part, live clothed in fabricated structures in concentrations away from the lower latitudes in places called cities.

Monkeys do quite well in their particular niches. Humans do quite well in theirs.

niche, from Webster's Online:
2 a : a place, employment, status, or activity for which a person or thing is best fitted b : a habitat supplying the factors necessary for the existence of an organism or species

Furthermore, from Creationist resource "Answers in Genesis," they urge their fellow creationists to cease with the argument in your tagline thusly:

from here: http://www.answersingenesis.org/home/area/faq/dont_use.asp

‘If we evolved from apes, why are there still apes today?’ In response to this statement, some evolutionists point out that they don’t believe that we descended from apes, but that apes and humans share a common ancestor. However, the evolutionary paleontologist G.G. Simpson had no time for this ‘pussyfooting’, as he called it. He said, ‘In fact, that earlier ancestor would certainly be called an ape or monkey in popular speech by anyone who saw it. Since the terms ape and monkey are defined by popular usage, man’s ancestors were apes or monkeys (or successively both). It is pusillanimous [mean-spirited] if not dishonest for an informed investigator to say otherwise.’

However, the main point against this statement is that many evolutionists believe that a small group of creatures split off from the main group and became reproductively isolated from the main large population, and that most change happened in the small group which can lead to allopatric speciation (a geographically isolated population forming a new species). So there's nothing in evolutionary theory that requires the main group to become extinct.

It’s important to note that allopatric speciation is not the sole property of evolutionists—creationists believe that most human variation occurred after small groups became isolated (but not speciated) at Babel, while Adam and Eve probably had mid-brown skin color. The quoted erroneous statement is analogous to saying ‘If all people groups came from Adam and Eve, then why are mid-brown people still alive today?’