I'll start thinking about other things I could be doing at ~$2 million in combined retirement accounts, inflation adjusted since GF and I are 25 and 28. We bought a condo recently in a high rental demand area that we're currently living in but plan to keep as a rental long term so rental pricing and property value of this place will increase/decrease that number somewhat, depending. Also heavily depends on whether or not this country gets its act together re: healthcare in the next ~15-20 years. Canada is an option too.
My GF will probably work a normal job longer but I'm hoping to be done by 45ish. I won't fully quit working but will try to make some money doing the things I wish I could do all day -- photography, piano performance, snowboarding. Realistically the only thing anybody would pay me to do in any of those categories is teach. Or photograph weddings but that sounds boring as hell.