I just watched a bit of fencing yesterday, and I think that curling is very easy to follow, and Fencing is not.
Following first contact, the match is over in a split second. And what I also don't like is that those sabres seem way too flexible to be representative of a real weapon.
Of course, I am just a layman so I may be wrong. But as a spectator sport I don't like it because of these reasons.