Congratulations on retirement at 27. I might end up retiring around then myself. I had been thinking that 30 was an okay age, but I'm really not sure I can make it that long -- even 27 might be a stretch.
Unlike most readers on the forum, I don't really have a retirement savings target. Whenever I retire, I plan to have dramatically more assets than I need to safely support my living expenses forever, so that I can fund some expensive activities that I have planned for my retirement. If I end up checking out before saving as much as I would like, it just means that I'll need to find an alternative revenue source for those proposed projects, which is doable.
I am impressed by how so many posters on this forum seem content to work as long as they do.