To me it seems manufactuers are going witht eh swing and they know the majority of "modern" shooters shoot off benches, Bipods, Quad Sticks, Tripods and almost never usign the body as support. Few will walk more than a few hundred yards to the High seat or shooting house where there is a shooting rail for support so rifle weight is of no real importance.
You only have to read some older shooting books and all say that a rifles of 8 1/2lbs or less is the ideal weight for a general hunting rifle. Magnums need to be a bit heavier due to increased recoil. The one I always found amusing was one said that a fit strong man could usually use one of the bull barreled rifles but the average city dweller wold find this too much to carry in the field as their excercise of the Bi weekly Golf Games was not enough for then to cope with rifles of such weight.
Not word for word but it covers the gist of the author and he was talking about rifls ready for the field not bare. It was quite a while ago that I read this.
Now does anyone else find it odd that on one hand we have manufacturers that are making rifles that a few years ago would be having trouble getting past scrutiny in an international match due to being over weight! yet on the other hand we have manufacturers making rifles that are light weight .... 5lb-6 1/2lbs in normal chambering like 7-08, .308, 270Win and 25-06 plus a few newer rounds like the 26 Nosler. Hunters clamouring for lighter weight rifles is nothing new and has been going on for the best part of the last century.
The mention of gun bearers made me smile I have to admit but the use of such in Africa was no due to idleness but one of safety. If the Hunter carried his own big Double rifle when they come up to the quarry he would have been to tired and exhausted to use the rifle. Big doubles weigh in around 16lbs so the hunter would be carrying a light rifle and swap to the heavy in the closing stages of the track so he was not to tired to swing the rifle and shoot it as well as possible.
Now as was also mentioned it's your rifle, your shoulder, your going to have to carry it so it is really up to you.