I think a lot more people are self sufficient nowadays, saves a lot of additional cost too and saves a lot of time - I email anything I can.
I guess more people are tech savvy and are able to produce their own work more easily. There are still jobs though.
It's that kind of skill I'm very glad I've always had as it has been a godsend in times when I've needed to bridge a gap between jobs and during the recession. I've always found work quite quickly through temping agencies.
A lot of law firms still employ secretaries, some of the larger ones have specialist document production units. There was a buzz about outsourcing a while back, sending work abroad via digital systems for it to be typed and emailed back far cheaper than employing secretaries here.
I've varied lawyer wise, I've had secretaries and have done all my own work at different times. I'm still yet to find a secretary to out typingspeed me though :)