You took some nice pictures and had a good day in the woods. Good on you for letting those young bucks walk. Much more to deer hunting than just filling a tag and you won't get that old boy if you have already punched your tag on a little guy.
Lots of years I do not even pull the trigger on whitetails at home, but I have many enjoyable days afield. If just shooting a buck was the issue it would all be over the first day.