It gives me nothing. I don't think that this is attractive so I voted for no. However as long as you don't highlight the armpit as the selling point of the scene it does not bother me so much, when others enjoy it.
It's like a foot fetish. I really don't understand the fascination of it either, but i just skip the footjob parts in a scene and I'm fine.
At the end of the day you guys have to cater to so many preferences and you're doing a good job at experimenting with new things.