-If usurpers denied you what was rightfully yours, then waged war throughout your kingdom you probably wouldn't be in the best mood either.
-He doesn't care much for his wife, but outside of her love & reverence for the Lord of Light she's batshit insane. He does, however, love his hideously deformed daughter, and clearly harbors some affection for Ser Davos as well.
-King Stannis gave the people under his banner every opportunity to disavow their false deities and embrace the warmth of the Red God. They refused, so he did it for them.
-Even Jon Snow recognizes who the true King is and he knows nothing. Meanwhile Arya has everyone in Westeros on her kill list except Stannis. The Starks know what's up.
-I like Daeny, but she need only look at what happened to everyone else who challenged the OTK's rightful claim to the throne: Renly(Dead), Robb Stark(dead), Joffrey(Dead), Balon Greyjoy(dynasty is dead). She can barely conquer cities in Essos-- leave Westeros to The Mannis.
-God and the Iron Bank have chosen Stannis, you should too, Whoopsie. We all should.