I retired at 58 when my husband was 62. The plan had been that he would retire at 65, a year after me (at age 60, when I was supposed to get my state pension). It didn't work out like that, as the pension age changed, so neither of us will get a state pension until we are 66. My income has gone down considerably - partly because of early retirement, and partly because I was unable to pay into an occupational pension for a long time after I started work. My husband's pension is a lot better than mine, but jointly, we don't have remotely what we had planned for (a year with me getting my state pension and a better occupational pension, then, when he retired, two lots of state and occupational ones).
My husband decided to retire at 60, as he wasn't enjoying his work, and after two years of getting up and leaving the house whilst he was still in bed, I decided to join him. The house was paid for, which obviously helped, but I am a worrier, and wasn't sure how we would manage.
What I found was that not having to pay for 2 commutes, 2 lots of lunches, coffees, work clothes, (and all the things people have to pay just to go to work) made far more difference than I'd expected. Tax went right down, and although I still pay NI contributions, the voluntary ones are significantly less than in-work ones.
Some of the time since I left has been lockdown, of course, during which we have spent nothing on going out or having people round here, so expenditure hasn't been typical lately, and what with the damage to the economy caused by Covid and Brexit, things might get tighter before the state pensions kick in.
I think that a lot depends on how much you spend in order to feel happy. That's not the same as how much you spend to scrape by. You need to factor in the things that you enjoy. For some that is having a full TV package, for others a fancy phone, lots of books or being able to afford lots of lovely knitting yarn
. It's doing without that sort of thing that makes people miserable, I think. It's easier to do without one big thing, like an exotic holiday, than to spend every day noticing all the little things you can't afford.
If you already have plenty of 'stuff' (many of us have too much of it by the time we get to retirement age) and your budget allows you to afford a little luxury or two, I would say go for it. Personally, I have never looked back - I know it's a cliche, but I don't know how I had time to go to work.