And if they're NOT responsible, maybe a desktop PC isn't right for them anyway. I seem to recall a recent discussion where I mentioned the benefits of laptop ownership in certain highly mobile situations?
Well, I'm not really sure where "not responsible" aligns with "highly mobile", unless you are referring to people that are so poor that they find that they have to move often, because they're constantly getting kicked out. (Could happen.)
I have a friend, that is "poor". (On a relatively fixed income, section 8, etc.). But he works, part-time, at a nearby business. (I give him mad props for having a job, and being responsible about that.)
But he got one of his tax checks back, and you know what he wants to do with it? The same thing that he wants to do every time he gets a hold of a large sum of money: "Let's go to (a casino in a nearby state.)".
He doesn't think, "Pay my bills", or "invest in infrastructure" (car, computer, etc.).
And yet, his 2008-era PC is falling apart. He called me the other night at 11:30 at night, after he was getting "out of memory errors", and I told him to re-start. Well, it never did, he had to call me from a pay phone, because he couldn't use his MagicJack, because that requires his PC to use.
I told him I'd show up and fix it for him, for $30. Turned out, his 10-year-old HDD was dying / dead, and dragging down the rest of the PC. (His OS drive is an SSD, thanks to me.)
At what point do I refuse to fix his PC, to force him to get a new one? I've suggested multiple times to possibly consider getting a new one. Which, he doesn't bother, he thinks his is just fine. Until it breaks down at midnight (again), and calls me, "You gotta come over and fix this for me!".
I've been trying to push him to sign up for the $10/mo internet like I just got (unlimited 4G LTE data, at ~6Mbit/sec), but he... isn't interested. He's leaching internet off of a neighbor (with permission), instead of putting down the $195 up front for the MiFi and first year of service.
If he loses his internet, he's going to be dead in the water. If it wasn't for me, he wouldn't even have internet today. (I hooked him up with a "high-power" wireless N USB adapter, so he could reach his neighbor's router, two stories up.)
I'd love to build him a really decent i5-6500/6600K rig, with 16GB+ of DDR4-2400/3000, and a 240GB SSD, and maybe later, a gaming-grade video card. (He's expressed interest in playing KI on PC.) But he'd have to pay for it, I'm not buying him that class of rig.
Or even, buying one of my G3258 OC w/GTX950 rigs, 16GB, SSD, and I'd cut him a discount. (More like, I'd eat some of the cost, and sell it below my cost.)
But again, he'd rather go to the casino.
Edit: I've got another occasional client, that has a P4 rig with XP. Well, they got hit by the "Indian tech support scam", and I had to re-format that rig, and fix it back up for them. (This was just before XP was EOL.) I charged her probably $100 in labor on that job, which required three days of my time. (XP update issues...)
In hindsight, I should have told them that it was a total loss, that it wasn't worth fixing, but they were stubborn, and wanted it working, because they had paid so much for it initially, years and years ago. (Not from me, it was a branded OEM rig.)
I felt a little bad about that (even though I was just following their wishes), and bought them a refurb Windows 7 Core2-era PC for $100 and gave it to them, to replace the P4. Well, they gave the Windows 7 PC to one of their kids, and kept on using the P4. Shrug. I tried.
Edit: But that last anecdote illustrates why it might be "bad" to sell a too-expensive PC, because then they won't want to upgrade, ever, even when it's way past the time, because they have some sort of emotional connection / block due to the high price of the PC.