Your experience is one data point. When it comes to how something feels to you, which is a personal and individual thing, then it’s more valuable to you than aggregated data. That’s a subjective opinion.

But the data on the Internet is more accurate for objectively measured things.

For example: some men think it’s normal (ie typical) to not wipe your ass. But if you look at lots of data points, measured objectively, you can see why their one data point is wrong. And nasty.