Speaking of which, that is another godsend of down sleeping bags- they are light. Their warmth to weight ratio is lower than average synthetic sleeping bags and provide a longer lasting durability. Let's not forget that down components is much more comfy too. This is helpful when you are out in the wilderness and the weather is dipping to cold levels.
Specifically, down sleeping bag offerings probably last about twice as long as their synthetic counterparts. Now that I've covered the good parts about these types of sleeping bags, let's consider the shortcomings.
1. Down bags are pricier. Hey you get what you pay for right?
2. Down sleeping bags need careful cleaning or they can be ruined. You will need to use either dry cleaning or another more complicated method of cleaning to preserve the lifetime value and utility of the down bag.
As a recap, the benefits of down sleeping bags are that they feel more relaxing, are less heavy, supply greater warmth, and last about twice as long as synthetic sleeping bags. On the downside, they are more expensive with an initial greater investment of your money additionally with the more complicated cleaning process which could also add up to the cost of it's lifetime usage.
It's really that simple. With a better sleeping bag, you have a higher chance of enjoying your outdoors experience. Think of it as traveling first class vs flying coach in cramped quarters. Similar idea as it applies to the universe of sleeping bags as well.