Edgema, are you sure you want to retire? I think some people chase FI for peace of mind, but not RE so much, either because not working makes them nervous or because they fear running out of money.
I wonder if some of your hesitancy comes from not being sure what a post-FIRE life would look like, not just financially but daily.
Beyond all that, though, there's nothing wrong with padding your stash a bit more and succumbing to OMY (one more year) syndrome. The point of FIRE is to maximize happiness, and if it's making you fret, it's not accomplishing that goal. Maybe when you do finally retire, you'll kick yourself for not doing it sooner, but maybe not. We're all different.
My suggestion is to stop wondering what other people will think or whether you have enough money for the lifestyle you want, and just ask yourself: "What kind of life will make me happy?" Taking into account your family's needs and desires too, of course. It's important to identify the real goal of happiness, not the artificial sub-goal of collecting enough money.
Good luck.