If you run engineering software or cad software, then this would definitely do the trick. I'm running a Dell Precision 690 with dual xeons and 32gig of memory and let me tell you when I run simulations and analysis work, that memory starts to get used up quick.
Exactly. There are needs for larger memory capacities in workstations but for the home user and even the gamer, that much RAM is overkill at present.