Okay, I'll respond here, then I'm done. Hang yer basses from a telephone pole, that's yer business.
"The cons of floor stands. Wall hanger generally don't have these issues.
1. They take up much needed floor space for other things.
I have the space. It's called an office/studio purposely built for such activities
2. They're more in the way and easier to bump into knocking your bass to the floor.
I watch where I walk and my stands aren't in the middle of the floor
3. Depending on the design some are unstable.
Don't buy crappy-made stands. And make sure those wall-hangers are properly installed to the wall.
4. Related to #4, offset or differently shaped instruments don't fit well on them and will be unstable or slide off.
I don't own any such instrument.
5. In stands that cradle the neck, the pressure from gravity & the bass leaning can warp the neck especially in high humidity. I've had this happen to lumber stored leaning against a wall.
I can see this on an unreinforced 10ft 2x4. Not a properly constructed truss rod-reinforced guitar or bass neck not over what, 30 inches long. That's a stretch, as it were.
6. I've seen many instances where the rubber padding has eaten through the finish & paint all the way down to bare wood, even with modern finishes."
Did you notice in some other comments here about being aware of the padding used on ANY stand or hanger and how it could react to the finish on a bass neck?"
Here's my reasons against wall hangers......
I don't like 'em.
That's all anyone needs to know...
I should avoid this completely-predictable-outcome topic. But when I say that to someone else, I'm told "Hey, this is TalkBass, this is what we do". (or I get a warning.....

)
Fair enough......