If it makes you feel any better, I dithered for a good long while between martial and divine for the monk. But I wound up going with divine for several reasons:
1) The older edition monks used ki, which has a strong spiritual component. That felt more divine than martial.
2) Monks have a lot of powers that felt a little more supernatural in nature than the martial power source would have justified.
3) There's already two martial strikers in the core rules, whereas there are no divine strikers anywhere in the game yet. (That alone wouldn't have made the decision for me, but as a tertiary reason, it helped tip the scales.)
Sorry you're disappointed its not martial, but I think you'll be happy with the class in general. (And it's not a hard flavor change to make, if you want to.)