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My office still only uses ASD - mainly because of lack of time and interest in 
learning LRFD;  but I also prefer ASD because I like to know the level of real 
stress relative to yield strength and I am often just as concerned with 
serviceability/ deflection control (for industrial structures) as I am about 
Although I do use load factor design for new concrete structures, I often 
revert to working stress analysis for existing structures, to have a better 
feel for real stress relative to yield capacity.  I only learned ultimate 
strength design for concrete in college, but I learned working stress design 
"on the job".  I think college graduates are better off still having knowledge 
of ASD methods.