Actually, after having tried a few SPICE products, I find LTSpice to be one of the fastest and easiest simulators to drive.
Circuit entry is a breeze, with keyboard shortcuts for all of the basic components. Nothing is hidden from you, as the schematic translates directly into the SPICE listing. The graphical waveform output is also pretty intuitive.
The only thing you could take issue with is that it forces you to get to know SPICE itself on a level that you wouldn't normally have to with other vendors' products. Personally, I feel that's a good thing. Nothing will lie to you quite like a computer simulation will, if you don't know how the underlying engine works.
Finally, I have yet to encounter the sort of convergence issues that I was plagued with by other vendors offerings. As a general rule, if LTspice can't simulate my circuit, I've mucked it up somewhere.
And it's free, with a complete library of essentially perfect models of Linear Technologies products.