I do. Then I recognize that the feeling is symptomatic of just being tired of computers in general and that a new laptop won't fix that. In some ways I suspect it will make it worse because a new laptop comes with a sense of obligation to spend more time at the computer even though spending time at the computer is the root cause of my ennui.
To be more specific, I've recently had new computer fever for a laptop with pen support because I imagine myself creating computer art. But the reality is that if I give myself permission to make art, I'd rather be making physical art not spending additional time sitting at the computer...and spend some meaningful fraction of a thousand bucks toward doing so.
To put it another way, shopping for the props of an activity is more socially acceptable than doing the activity. A large part of the social acceptability is how efficient shopping for a new computer is relative to the tasks that a person does on the computer. A few minutes ordering online versus days, weeks, months and years writing a program. "I bought a new computer" is an excuse for not using the one I have. I can spend my time setting the new computer up instead of creating something and setting up the new computer is arguably "meaningful progress" though in reality it's make-work.