Very impressive! I hope you splurge somewhere or you may be a bit too miserish for me, but very impressive kids you have there.
I’m sure you have seen the math on this one but for everyone else’s benefit…
If a kid puts 2k a year into a roth ira at age 16, 17, 18, 19 for a total contribution of $8k, at 10.25% interest the 8k compounds into $1M at age 67. (This is not 2k every year, this is for 4 years, and never save another penny for retirement)
This is about the only lesson I plan to beat into my kids when /if I have them. Although I will probably make sure the put the max in every year, I would want them to have about $8M in their roth at retirement.