If you don't use your binocular year-round, you are probably better off with a 7X or 8X for your hunting. I went to a 10X Swarovski about 23 years ago when I started managing a large ranch down here. They were in my truck or my saddle bags every day. They were within reach in the kitchen or on the porch when I was in the house. They were on my desk if I was in the office.
A lot of my friends are birders and they also keep their binoculars and spotting scopes handy and use them for something every day. Most of them use 10X glass, too.
When it comes to 12X or 15X, it's pretty much just die-hard hunters that use them, usually with a tripod.
