My 28-105 II USM is made in Taiwan. Some models of this lens are made in Japan as well. My only complaint is the zoom ring is stiff, jumpy, and loose all at the same time... but I can't complain since its as sharp as a tack

Many could say that in the end that is all that really matters (IQ) and I wouldn't disagree.
I think what it really comes down to here is that some people like the OP and many more do care where items are made and if two identical lenses were placed on the table both the same price, one made in Taiwan the other in Japan, given the option to only pick one lens without testing, they would pick the one made in Japan.
Other people couldn't care less and there is nothing wrong with either school of thought.




