Its a matter of personal preference...As far as the little slam there about being an "armchair sportsman", LOL, not in the least. I couldn't tell you one turkey hunter on TV and what they use if any as far as optics. In fact I've only seen one guy use optics on a turkey gun, Jim Clay, who is from the winchester area and I've met on a couple occasions. Nothing to do with him or any advertising, just a rig I wanted to try. Out of 6 shotguns I have, why not try one on the gun thats already drilled and tapped and never used for wingshooting?
If your question is not being driving by consumer exposure as you claim, then it must be driven by friends of yours. Ask them what they use.
As to question of why not?
1) It won't help kill turkeys
2) Cost
3) It could fog, fall off target, break, run out of batteries, etc...
4) A vent rib never has any of the problems in #4
5) Occasionally strange things happen. Sometimes a second shot is required. Sometimes that second shot is flying or running fast.
It's your gun of course. You could put a bowling ball on the end of your barrel for all I care. I'm just giving my thoughts on shotgun scopes and why they are suddenly in the field.