I'm a 29-year old male who spent his 20s building a career I love and now has a 6-month old daughter, so this quote:
> Don't waste your 20's "building a career". You've got your 30's and 40's and 50's to do that. Don't be in a rush to have kids too soon.
Doesn't really make sense to me. If you don't build a career and finances in your 20s, you either can't afford to have a kid in your early 30s or you have one and can't provide the life and opportunities they should have. And it seems you skipped over the part about women having extreme difficulties having children later than their mid-30s, or the children they have are at a higher risk of birth defects and miscarriages. Typically, a guy by himself cannot create a child without a woman, so if you're going to party in your 20s and not think about finances and a career until your 30s, and kids later than that, you should know going in that your partner will be need to be much younger than you to accomplish this.
I don't mean to ask personal questions here, but it seems apropos considering your guidance: how old are you? do you have a spouse? a son or daughter? Does your guidance match up with how you've lived your life, and are you now successfully balancing a budding career and family in your older years after living your 20s in various countries like China, France, Brazil and others?