Just as a naive consumer of its facilities, I find LLVM produces binaries from C and ObjC code which are smaller and faster than their GCC equivalents. I'm attempting to write my own front-end as well, which is easier than I had expected. I don't care what the black box does, c.f. "The user doesn't care"(TM).
No one is complaining about using LLVM they way it's supposed to be used. The problem is that LLVM has been promoted for use cases that it totally sucks for (JIT, portable bitcode).
