Both my kids have played with the steel Tonkas I had, and still have, 35 years ago (jeebus...that's way tooo long)
I doubt they will have even one toy of their own that can outlast their childhood. Plastic and electronics just don't have the same legs on 'em.
When they've moved on, I'll still have those same Tonkas waiting on my grandchildren. (There's another word I'm not ready for yet).
Gotta love a good thing...