I am very much in the camp of
@grand veneur . I have hunted cape buffalo on the African continent for exactly the same reasons that I hunted suni or eland - or for that matter, the same reasons I have hunted roe deer, ibex, and yes, whitetail in Europe and North America. I do it to experience the region, the people, the hunt itself not as some thrill seeking event or some sort of affirmation of manhood. I have had that sort of experience elsewhere in life.
@Betterinthebush also makes a very valid point. Terrain dictates much with respect to the first shot at dangerous game animal. Following a lone bull in the jess is very different from approaching a herd of 200 in the Zambezi Delta. I have done both. One of those shots was as close as twenty-five yards and another at seventy. Each of those, and any others I have taken, represented the ideal range in those conditions to best place the initial shot on a buffalo. Which brings us to the real crux of the issue.
I would agree that getting a client close is important to most PHs. But that is not to test his or the client's courage, but rather it is because most of his clients are pretty terrible shots, particularly if they are carrying an open sighted double rifle. I have several times noted my old friend and PH Boet's observation that the only thing in Africa that truly scared him was having a client show up with his brand new double rifle for buffalo or elephant.
Additionally, however civil we are trying to be, I am truly and thoroughly sick of the "proper rifle that starts with a 4 or 5" nonsense. I do not care with what number the size of the chambering begins, a one lunged or gut shot bull is a very dangerous thing indeed. In that case, if we are going to be truthful as well as civil, it will be the PH or tracker who will most likely pay the price of that incompetence - not the client who they will do all in their power to protect.
In short, the decision to pull the trigger and shoot a buffalo is an act of enormous responsibility. Not because one's chest is puffed out over one's self-perceived courage, but because if anything goes wrong with that first shot, we the client may bear the responsibility for the death or injury of someone else. That is the reality and seriousness of dangerous game hunting - not the thrill. If you can best make that shot with a .500 that shoots 3-inch groups at fifty yards from a rest, then great. If you can best do it with a scoped .375 then better yet. I own a .404, 500/416, .470. and .450. I shoot them all very well. But, for a first shot at any range, I personally have not been able to improve on the .375.