The other sacrifice is the size or thickness of the bag. A mummy sleeping bag essentially will certainly be much smaller sized for bring around which is why it is a preference for many backpackers/hikers. The rectangular resting bag isn't as small yet because it's not common to be lugging it, apart from somewhere in a vehicle while getting to your intended location, the bulkiness of the bag is not as large a problem.
The definition of a sleeping bag is a protective bag for an individual to sleep in. Some people may not like the feel of sleeping in a normal rectangle-shaped shaped bag, choosing the closeness of a conical one, whereas others could feel too claustrophobic. Camping resting bags are a lot more compared to simply resting bags. They are the determining factor of whether your outdoor camping trip is an enjoyable one.
I could confess that I have actually had one as well lots of experiences with that and also young boy, that was enough for me recognize that if I desire to truly want to enjoy my trips, finding the perfect resting bag for me is a top priority. The trouble is that when I went to look for my "ideal bag" there was so lots of choices I didn't recognize which bag would function best for me.