The main benefits of spinning mentioned often include
Burns Fat, Improves Posture, Strengthens Heart and Lungs as well as it can be dome at home when the weather outside is downright nasty.
Able to do it from home makes it convenient and most importantly saves time that would otherwise be wasted getting gym gear together, getting in the car, driving to the gym, waiting for the usual late comers before your class can start, then driving back home, emptying out the bag etc etc.. in short.. lots of LOST seconds.
So spinning from home makes a lot of sense.
NOW while you are there its a good opportunity to work even smarter and manage your time even better as it can be used for us to review some of your health and fitness goals at the same time