I don't understand how this is a question even. It folds as fast as you can move your arm up or down almost...
You can fold it up as you are raising your arms up for that morning yawn.
I don't have to walk around a giant bed during the day.
The only drawback is I like to leave the bed down so the bedding can dry before folding it up, so I leave it down a few minutes. (your body loses water as you sleep but that water vapor ads very little dampness to the sheets.) On mine I can actually fold it and have it a few inches open so air can still circulate but it is just as out of the way. There is a hook for travel that closes it all the way too.
When ready for bed I drop the bed down, which takes about 3 seconds.
Murphy bed allows you to tow a smaller trailer but have more room than a bigger trailer with a fixed bed.
I am all in for the Muphy bed.