OP here. I'm humbled to have started a topic people actually find interesting! I usually hang out in the DIY section of the forum and ask questions about crawlspaces and plumbing.
There are too many of you to quote and respond to, so I'll just say this: Everyone has a very valuable and well-reasoned perspective here – even those of you who see things differently than I and plan to leave everything to their kids, circumstances be damned. I fully recognize that I'm one of the "weird" ones. Leaving your money to your children is considered normal. Ok.
A few things that might help you understand my position, all of which are anecdotal only:
1. I've personally seen people inherit lots of wealth and lead extremely vapid lives. Not hurting anything, but not contributing anything either. Obviously there are counterexamples out there, but my perspective has been shaped by what I've witnessed.
2. I have briefly been poor myself, at least per the U.S. government's definition of "poor." I dug myself out by working a crap part-time job while building my consulting business. I credit my success to my "hunger" to get out of poverty – it was having NOTHING that inspired me to work for SOMETHING. I believe there is value in this because I've lived it. Yes, other advantages helped a lot (I'm a white dude with a college degree living in a rich country – this ain't no Horatio Alger nonsense), but I never would have given enough of a shit to do anything worthwhile if I had wads of cash given to me for no reason.
3. Personally, I've grown lazier as I've acquired wealth. I've become too comfortable. I don't take business risks anymore (don't want to lose the money!). It's fantastic not to worry about money, but my money has also made my life kind of boring. My son will probably end up well off with or without my inheritance, but getting it might make him lazy and boring like his dad. It's a risk I don't want to take. I guess I'm setting myself up for, "If you're boring, that's your own fault" comments. Whatever. Fire away.
4. I suppose I've just got an anti-moocher streak in me that affects my view on inheritance. For example, my wife and I never asked our parents for help buying a house. Never occurred to us to do so. Actually, one of my wife's stepsisters did ask her parents for help (lots of help, actually) putting a down payment on her first home. It was provided. Both of us (the wife and I) found this appalling. You don't just get to have your own house because, oh... you want one and mom and dad can afford it.
5. The idea of inheriting money from my own parents makes me sick to my stomach. I'll definitely be giving it away, whatever "it" is. We're probably only talking the value of their home, which might end up being a small condo by the time the inheritance comes. Even so, it just seems absurd that I would get what they worked for without working for it myself. I've had opportunities and advantages in life. My son will have those advantages, too. But millions of others get dealt a shitty hand. Why would my grown, adult son deserve the money more than they?
If I haven't blown all my money on strippers and blow* by the time I kick the breathing habit, I'll probably give it away to people who need it. If my son doesn't need it (and he probably won't), he shouldn't get it.
May he live a long and prosperous life and experience the joy and the (healthy) struggle of building his own stash! Just like his dopey 'ol dad.
*It's a joke. Chill.