Death is death no matter the means. The only use of guillotines is the satisfaction of the bloodthirsty beast in the hearts of everyone. Cheering for guillotines tells me you know little to nothing about death. If I were to bet, you probably have never seen a lifeless body in your life
Discussion
You would lose that bet.
It deters future politicians from plundering and fucking with us. Maybe the best stock traders wouldn't be politicians, and they'd think twice before starting that next war, if they knew guillotines were in the cards.
But alas we are a society full of pussies too afraid to breathe without permission
The idea is to make it public, humiliating and/or gruesome, so that it sends a message to the rest of them; a reminder of who they serve and why they are there in the first place. We are not supposed to be their slaves, nor are we supposed to kiss their feet and bend our knees to them. Many of us will only bend our knee to one entity, and that is by choice, not by force or coercion.
I think very few of us take satisfaction in the physical act of it, but with every action they take against us, the more justification we will have for a violent response.