I run Panasonic resistors (have had excellent results, consistency, available, price, etc), they are still marked. Some resistors I have from other manufacturers are not marked.
The only time it is a PITA for unmarked resistors is when you dump a bunch of components on a bench for hand assembly. My advise is to never do that anyway.
If there is a silkscreen with component ID, I guess I just don't care either way.