Back in the 80's, we took a "booze cruise" in Boston. As we were going through the gate, wife and I were asked for ID. I swelled up my chest, held my graying head a little higher, and quickly pulled my ID out of my wallet, showing great manual dexterity for someone of my age, who someone thought was much younger. The deflation of ego came in two very short, closely spaced moments. My wife told me to look behind me and there was an extremely elderly man (in comparison to me) in a wheel chair being carded, and then she pointed out the huge sign that said picture ID's were required of all passengers, regardless of age.
I went to the Fishercat's game on Thursday evening, and prior to the start of the game, I got my one and only beer for the night. And in accordance with the sign at every register that I have been to in the stadium, I had my license out for viewing. They do required ID of anyone being served alcoholic beverages. Not an issue for me.
And to that end, knowing several friends who either own resturants that serve alcohol, or who are servers or bartenders, or own stores who sell alcohol, I would have no problem with any of them requiring ID to be served. I know the pressure that is brought upon them re: proper ID, over-serving, serving already intoxicated people, etc.. If it makes their job easier, do it...I'll still take it as a compliment!