Something might not sound so expensive if you frame it as $0.50/hour of use. But it certainly does if there's an alternative that meets your needs that you can get for $0.10/hour of use.
There have been a bunch of times in my life when I delayed purchasing or felt guilty about purchasing something genuinely valuable but very expensive.
But then when you're in year 5 or 7 of using it daily, you're like... best use of my money ever. That's the point here.
If you spend a ton of time needing a large screen, using this for 3 years might be that expensive purchase that pays off for you.
That doesn't make it worthless to figure the approximate cost per time used of a couple of different beds, maybe even a nice one.