Depends on what it's worth to you to have them pursue life with financial burdens or not. The economy is pretty rigged against normal working families now.
What's your retirement number? There shouldn't really be much difference in years worked if you're trying to get to 3.5M vs 5M, and that's a fairly small nest egg for a full time anesthesiologist even with up to 3 children.
The retirement number should drive your generosity. No one would suggest dipping into your financial health to fund a wedding or a house, but if your 30 year old son busted his butt in engineering or teaching and now finds himself capping out at 100k in his career after 8 years in the business, he's gonna be hard pressed to ever buy a nice house for his 27 year old wife. People I know would probably delay children due to financial constraints, which may or may not benefit you if you want grand kids, and may or may not benefit them as continued fertility is not a guarantee when delaying starting a family.
Would you spend a down payment for your kid if it meant 5 more years of grandkids to watch grow up? I know I would do that 100/100 times.
Not here to espouse your personal values, as I don't know them, but for my values I would definitely buy a faster path to life milestones for my kids so they could have grandkids sooner, and I plan to do that to entice them to take life's jumps sooner. I know I wish I could do it all sooner, but med school ain't cheap, down payments ain't cheap, and some spouses won't do the family thing until you're both financially viable. Would've been nice to have some help from the Bank of Dadmerica in that respect.