SecondCor521
Give me a museum and I'll fill it. (Picasso) Give me a forum ...
I hear you, but don't think a 50% savings rate is realistic (at least for the first 5-10 years). That timeframe is some of the most costly in my opinion, and you are not going to get out of SS, etc. JMHO. Otherwise, I agree with the simplistic assumptions.
Flieger
It might be uncommon but it's certainly realistic.
My youngest just graduated from university this spring and started their first job. Their savings rate in October - they share this with me voluntarily - will be 60-75%, and it should continue at that rate as long as they are in their current set up:
Living with older brother who only charges utilities for rent
Paid off / gifted car
Works from home
Cooks from scratch
Inexpensive hobbies
Gets bonuses at work due to doing a good job
Graduated debt free (state school, lots of scholarships, some grants, work study, living off campus)
Probably few young people have all of these combined, but individually they're pretty realistic.