Don't have anything against them and I am not for banning the use of them, but IMO, cameras take away from hunting.
So many depend on cameras and not their knowledge of how to read sign and attempt to "figure" deer out just by what a person sees with their own eyes. I hear of so many that most all their hunting depends on what they see or don't see on camera. I think I would quit hunting if I relied on cameras.
I can only speak for myself.
Trail cams are just another scouting tool, and a really good one.
And I see all those pics they provide with my own eyes
The pics help me to "figure out" deer patterns & behavior better and quicker.
One of my biggest "take-aways" over the years has been what large ranges deer can have. By running trail cams over some very large areas, many cams miles from others, I've seen the same buck show up on multiple cams in a 24-hr period, while those cams were miles apart.
We often hear a hunter say something like, "I've got a good buck on cam, over on my place, and he's my target buck". Often, that hunter's place is less than 100 acres while that buck may be spending more of his time on the adjoining 1,000 acres. What's more, there may be several other hunters within a 2-mile radius catching that buck on their cams frequently, each thinking that buck spends much or most his time in their area.
I've found deer, particular bucks, can be much more nomadic than we wish, especially in more wilderness or big woods areas, compared to farmlands & urban areas. Often, they may regularly travel thru an area, but not on some specific trail, often over 100 yds away parallel to where they last passed thru that area. Deer are most "patternable" when their range is severely limited, such as by subdivisions in urban areas.
For me, the advantages outweigh disadvantages, although I've made many the same mistakes others have made because of using trail cams. Number one mistake has been over-hunting a specific spot because had obtained pics of a particular buck more from that "spot", while discounting all the other spots that buck actually spends far more of his time.