Well, that's the thing, you aren't really asking. You form the demand as a question to allow for negotiation, so it's not really a question. You should always try to walk into a negotiation from a position of power. It's an art form that is hugely valuable for getting what you want though, and you shouldn't feel bad about trying to get what you want. If you make your life better through negotiation then you might give someone else the confidence to put themselves in a better position. I'm not saying you should pretend your actions are altruistic, but don't blind yourself to the positives that can come from you trying to get what you want.
Sounds a bit complicated, but it's true. It's all about negotiation.
I negotiated lower hours a month ago. After almost 3 years on a project, asked to go down to 20hrs/week. As I see it, I have proved I'm trustworthy and that I can contribute significant value to the project even with lower hours.
In addition, my position of power was that I had some cash and other options, in case the other party refuses.
This is actually something that keeps happening to me. I show my value and that I'm trustworthy, and get anything I want, be it working from home, lower hours, or both.
