I reckon once you have used your winch you will wonder why you did not get it earlier. Before I had mine fitted I got bogged/stuck in a muddy creek about 400mm deep. It took me 2 hours using the handwinch to get out and up the bank on the other side, winching off alternate trees because of the angle. I only had my wife with me, who drove while I winched. Never again!
I'm getting too old to drag a 2-1/2 tonne Disco with a hand winch, although they are very handy and can do the job.
I had the electric winch fitted after. One big advantage is that you can winch and drive at the same time, which I've since found is very useful.
They are also great for dragging fallen trees off the road.
Worth it if you have the $.