Oh cool! Look, you can adjust the firmness! I think that tonight, I'm in the mood for 4. But, look out Friday night! 8!!!
/sarcasm
Seriously, if the claim to fame is that you can adjust the firmness to whichever feels best for you, why not just purchase a mattress with the correct firmness. (Or, does that make too much sense?)
<infomercial>
These shirts are adjustable! One size fits all! Only $1000!
"But dude, I wear a size medium. And, I can get a shirt that fits me for under $100."
Ahhh, but this isn't any old shirt, this shirt *adjusts*! It'll fit anyone! And, fits you!
So, don't go around all day with that XXL shirt that hangs off of you like drapes. And,
look at that super tight extra small shirt that guy over there is wearing. This shirt you can adjust to
size medium so it fits you.
"You've convinced me!"