I imagine your perceived notion of "glee" stems from a mixture of people enjoying being in the outdoors, doing something slightly dangerous, amongst friends, and/or enjoying riding their horses. I suspect they also enjoy maintaining their cultural heritage, like many people. I've hunted, and I didn't see any buzz that you describe at all, it was more of a functional task, the carrying out of a tried and tested procedure that followed certain rules otherwise it would have been a disorganised shambles. What sort of glee have you seen? Can you describe it? It sounds really silly to call it words like "buzz" and "glee", almost like you are describing some types of pathological maniacs who can barely function in civil society.
Its actually arguably more moral as it closer to sustenance level cultural traditions than, for example, someone expressing delight at a particularly good bargain cut of lamb from Tesco. Do you know how much wastage there is in supermarket produced food? Hunting is about culling the type of fox that tends to prey on farmed animals. When you have a large wastage element, this doesn't matter, but its more important for smaller arguably more ethical local farm shops, slaughtering on site, which I would like to see more of.
I'm talking theoretically of course, most British people trample over culture and would rather have their food as cheap as possible from the supermarket, and don't care about farming or slaughter practices, as long as they can convince themselves by doing so they are somehow morally superior to people who are more closely connected to farming, the outdoors and nature.
I really wish people would direct even a quarter as much attention to the cruel practices going on in our slaughterhouses, large farms and animal transporters that they do towards hunting. Because then they might actually achieve something worthwhile in terms of animal welfare.