Yes but only rarely and this isn't as fitness freakish as it might at first sound. I don't have any problems with the healthiness of the food and trust me, I had two friends who worked there, I've heard quite a few of the horror stories of how the food is behind the scenes from them. However I don't care, tastes nice and thus I enjoy it. However, I only eat them rarely because the local McD's isn't close enough for me to be arsed to make regular trips there.
There used to be a McD's in the center of town however they turned it into a bank. Though even if there was a close by McD's, I'd probably not eat there that often... Maybe if I was just hungry and I really couldn't be arsed cooking anything or I just wanted a quick bite to eat. Otherwise I'd just stick to normal food. Besides, I don't have the money for McD's all the time.
I did have a Big Mac meal the other day for the first time in about a year though... Was pretty good.