What if one of the reasons we don't need new PCs yet is not that tablets and smartphones are replacing the need for them entirely (although for some people they

What if one of the reasons we don't need new PCs yet is not that tablets and smartphones are replacing the need for them entirely (although for some people they are), and not that PCs are lasting longer on their own either (although they probably are, too), but that tablets and smartphones are helping PCs last longer by reducing the wear and tear we give them? I'm still running fine with my 2007 Macbook, but I think my iPhone has extended its life because now my laptop almost never leaves the house and sometimes doesn't even get used in a day, whereas pre-smartphone I used to cart my laptop around rather frequently and use it every day.