As an uncle I’m inconsistent about too many things.

Birthdays, for example. My nephew Mark had one on Sunday, and I didn’t remember — and send a text — until 10 p.m., by which point he was asleep.

School productions, too. I saw my niece Bella in “Seussical: The Musical” but missed “The Wiz.” She played Toto, a feat of trans-species transmogrification that not even Meryl, with all of her accents, has pulled off.

But about books, I’m steady. Relentless. I’m incessantly asking my nephews and nieces what they’re reading and why they’re not reading more. I’m reliably hurling novels at them, and also at friends’ kids. I may well be responsible for 10 percent of all sales of “The Fault in Our Stars,” a teenage love story to be released as a movie next month. Never have I spent money with fewer regrets, because I believe in reading — not just in its power to transport but in its power to transform.

So I was crestfallen on Monday, when a new report by Common Sense Media came out. It showed that 30 years ago, only 8 percent of 13-year-olds and 9 percent of 17-year-olds said that they “hardly ever” or never read for pleasure. Today, 22 percent of 13-year-olds and 27 percent of 17-year-olds say that. Fewer than 20 percent of 17-year-olds now read for pleasure “almost every day.” Back in 1984, 31 percent did. What a marked and depressing change.