It looks like discrete SR latches are rarely used (I've never ever used one in
any circuit I've built), yet they feature heavily in tutorials on logic gates!
DQ-flip-flops are much more useful in practice, and if you want a SR-latch a
pair of NORs or NANDs can be used anyway (this I have done), usually you'll
have a few spare such gates knocking around - so I can see why SR-latches
aren't commonly employed.