That seems like a bad faith argument, but I'll indulge. Gasoline internal combustion engine aren't made to run indefinitely and have many components that can wear over time and require regular maintenance. Modern computer hardware has no problem with the task and my "newest" computer which was built back in 2016 has run pretty much non-stop for 8 years now with 0 failure. At this point the hardware is more likely to be replaced due to age than failure. The only argument I can see making sense is maybe the cost of electricity aspect; but even then modern power supplies are so efficient I'd be surprised if it costs me more than $10/yr. to leave my PC on so I don't it's a very strong argument.