I have an IQ in the 140-ish range. (At least, that's what the professionally administered test I had when I was a child said. Online IQ tests tell me I've lost 20 IQ points in the intervening years. Make of that what you will.)

I would estimate I regularly converse "in real life" with someone of above-average IQ a few times a year. This is just a guess, of course. One indicator of the accuracy of this assessment (granting that education as a proxy for intelligence isn't perfect) is that no one in my circle of friends or family that I regularly communicate with has ever went to, or graduated from anything greater than high school.

You're right it's not fun.

The internet alleviates this issue to a large degree.