AITA for not taking someone's photo

The context

I'm on a ski trip with 6 of my friends. We've just ridden the lift up to the top of the mountain and I'm standing off to the side of the unload area waiting for my friends who snowboard to strap in.

Someone comes up to me and asks if I'd be willing to take a picture of their group.

My response

I tell them no because I don't want to take my hand out of my glove to work their phone for the picture. My friends all blow up and start shitting on me, telling me I'm such a dick for not taking their picture. One of my friends then does over and takes the pic for them.

AITA? I thought that this was a totally reasonable response but when I tell anyone this story they look at me like I'm a monster! Did I violate some taboos that I'm not aware of?!