Hearing more and more about early retirees having planned badly (or not planned at all) and then being forced back to work.
Financial knowledge in this country has always been quite woeful and it's really only those who take an interest in the subject who broaden their financial knowledge (excluding those who work in that industry). That leaves lots of ordinary people who have little interest or little appetite to gain some financial knowledge, which leads to them making bad decisions.
I highly suspect we'll see many more of these from the covid era where many people in their 50s decided they actually no longer want to work, and without figuring out whether they could afford to live until their 80s/90s, or retiring with nothing to do because they can't afford it.
it's not just the ones that are planning to retire early, a lot of people just coast to the "finishing line", then when they get to their 60s or even worst when they hit retirement age they discover that they have to work longer or change their lifestyle drastically.
The vast majority of people just put money into a pension without knowing anything about.. some even opt out.
There's nothing wrong with planning, the sooner you start and the longer then in theory the more prepared you will be.. but life throws spanners in, there are ways to plan against most of them like income insurance.
FIRE isn't for everyone, but until you really look into it how do you know it's not for you? it may not be for you at the moment but life changes and you may be able to start it a few years later.
On the flip side, people take FIRE to extremely, then burn themselves out or then forced to go crazy with the spending... I know a guy who owns three houses, none of them are in a fit state to be lived in, if he would have spent some cash on the maintenance, pay for professional services/advice when it was needed then the houses wouldn't need pretty much a rebuild.
I heard a story of a lady who been using the same water to boil her pasta for months, just to save that extra few pennies... yeah she may hit her FIRE number a tiny bit quicker, but what about the medical costs? also most people's FIRE number is calculated at what they are living like that the moment.. It's only costing x per year, and I'm going to live for y years, so xy is my fire number. Do you really want to be reusing the same water to boil your pasta for the y years? the Fire number should be worked out on the lifestyle that you want not what you forced yourself into.
The main thing that stops people from retiring early is lifestyle creap.. they get their yearly payraise and then change their mobile/sky contract or they get a promotion at work or a new job and decide that they need a bigger car. if people didn't lifestyle creep or try to keep up with the Jones, then most people can shave a few years of work.
Life is a marathon, save at your pace, don't burn yourself out but try to get your personal best/goal.