The prize is supposedly awarded to those who have "done the most or the best work for fraternity between nations, for the abolition or reduction of standing armies and for the holding and promotion of peace congresses." Hmmm. Well. I don't quite see how formenting revolution fits the bill, but the Peace Prize has been very strange of late in general. By its own lights, I don't see a single person or entity who would…
The Nobel Peace Prize has historically been surrounded by the kind of ambivalent feelings you allude to. To name one: Hume & Trimble (1998) was considered ironic because it was viewed as kind of reward for ceasing violence they initially caused. Similar remarks were made in 1993 about Mandela and De Klerk. It can even be argued that Gorbachev and Carter had blood on their hands before becoming saints. Maybe this kind…
Note that net-net, the invention of dynamite probably saved many lives. Nitroglycerin-based dynamite invented by Nobel isn't very useful for military purposes, and has never been in wide military use. It can't be safely stored for long periods or in hot conditions, making it ill-suited for battlefield logistics. Nitroglycerin-based dynamite is primarily used in mining and earth-moving.
Properly stored, dynamite is both much safer and more powerful than the black powder or liquid nitroglycerine that were primarily used in mining and earth-moving before the invention of dynamite.
Much later, "military dynamite", a more stable dynamite substitute devoid of nitroglycerine and more suited to military use was developed. While more stable, it's more expensive, and less commonly used. I don't believe Nobel had anything to do with the development of military dynamite.