As I understand it, enabling it helps from a speed standpoint and hurts from a data safety standpoint.
So you get to define "better" however you wish--faster or safer; one or the other; not both.
Most people are obsessed with speed and will choose to enable it, even though if the switch had been in the disabled position for years, they probably wouldn't have ever noticed it or complained. It's mostly about benchmarking and obsessing over minor details.
Looking at your HD tests, it seems to make virtually no difference on your drive.
I don't have a clue about the real-world risks of losing or corrupting data. I have never knowingly had data corrupted by enabling the cache, nor do I use a UPS. I have a power failure perhaps once a year.