The last couple of nights have made me realize that my sleeping bag is not as warm as it used to be. Despite the fact that it is rated for 40F I have woke up chilly indoors with a backup heat source set to 55F.
To solve this I am using a blanket to cover my sleeping bag at night—this keeps me much warmer. I gather all of the use this poor item has received over the last two or three years has paid a toll on it.
Other than that I seem to be sleeping well. With the extra blanket it makes covering the little dog easier when she gets chilled at night. She is a Chihuahua mix and is as cold-natured at night as I am. She no longer tries to get inside the bag with me at least!
Even with this challenge, I think I prefer the sleeping bag to the futon. It is much smaller so I can roll it up and put it away during the day instead of tripping over the futon.