Well, Laura, that is one hell of a question!!
The short answer is that yes, I feel sympathy for anybody killed in that manner.
If I show a great deal of interest in his antics, its because most people at the time, contemporaries of Rasputin (and of differing classes of society), viewed his influence as malign - witness the pamphlets freely circulating as well as the graffiti.
Now his real influence may have been exaggerated and I think that people will always argue over that. But there is no doubt that he was anti-war and that he was absent at the crucial time that war decisions were made in 1914. The Great War destroyed the Russian monarchy not to mention killing millions of people. Its very, very unlikely (but faintly possible) that between Witte and Rasputin (two unlikely bedfellows you are less likely to find!) the war could have been averted. And for me, that might have given Russia a chance to develop a consitutional monarchy and consequently avoid a civil war that killed millions and the Soviet disaster that followed.
Thus Rasputin is to me both a significant nail in the coffin of the Monarchy as well a 'player' at this significant crossroad of Russian history. Add to that, on the personal level of the Tsar and his immediate family, he, Rasputin, clearly served a beneficial role. That all totals up to a fascinating individual; love him or loath him, I don't think he can be ignored.
And lastly, as a student of the French Revolution as well (I live in France) its interesting that there are so many parallels in these two Revolutions; but there was no Rasputin at the court of Louis XIV and that makes him absolutley unique.