Agree with the aging eyes and iron sights. My irons, these days, are for decoration and to hang up on brush.
But even with good eyes, after I "discovered" scopes with wider field of views, a scope has been my choice.
There are Many people that do not practice getting on target quickly with a scope. These folks have a hard time finding a stationary target.
Though, some would have the same issue with irons without practicing shouldering the rifle and aligning the sights.
