Re: Evolution vs. Creation

First, lets be clear on the connotations of "belief".  As a Christian, I 
believe in some ideas that common sense and science are unable to address 
or verify, and as a Christian biologist, like biologists from other faiths 
and points of view, I came to my acceptance of the modern evolutionary 
viewpoint, essentially the same as Darwin's ideas with later additions and 
refinements, not by faith but by a carefully considered examination of the 
evidence (and what an extraordinary huge and convincing mass of evidence 
life and its fossilized remains presents with!).  So, any scientists that 
tries to sell evolution to the public as a belief, unconstrained by the 
evidence, is violating the ethics of honesty, which is the foundation of 
science.  (Not all scientists are perfect, but ultimately the pursuing of 
science is futile unless it is done with absolute honesty.)
	Would you ask the same question in regards to physics or geology?  You 
are correct to percieve fashions in science, and some fashions are found to 
be erroneous, but over the long haul science is self correcting, and plenty 
of time has elapsed to test the veracity of the central evolutionary 
ideas.  Something that is initially very unpopular (like plate tectonics in 
geology) eventually gathers strength and is widely accepted by virtue of 
its explanatory power... how well it explains and renders comprehensible 
the complexity of nature.  
	To get to your first question, the only people who oppose the 
evolutionary view of life's development do so out of ideological dogmatism 
or out of lack of knowledge.  My guess would be that over 95% of biologists 
are evolutionists, and my personal observation is that most vocal 
creationists have not been trained in biology (perhaps chemistry, physics, 
geology, etc).  I hope this answers your question.