I've posted before about retirement on other threads...it all depends what your expectations are.
I would say I'm really content, for me retirement is even better than I thought it would be.
I live on state pension only although I have now found a couple hours work per week locally, which gives me a few extra pennies and a new interest. Not sure whether I will continue with that long-term as there are so many other things I want to do.
I rent my lovely home in a beautiful rural area...suits me. Quiet, lots of lovely country walks, pretty village, good community. Lots of things to go to in the village. I manage to run my car which I didn't expect so easy to meet friends for coffee, go out to National Trust places, go shopping and so on. Lots of groups to join, evening classes to take part in, voluntary work to do, I'm also a governor at the local village school so have plenty of contact with all age groups.
I don't go abroad for holidays but I did plenty of travelling during my working life, so don't feel the need. I don't have pets or dependents, which I prefer, so only myself to think about. It's definitely possible to have a good retirement on modest means but you do need to think carefully about what you want, where and how you want to live, what interests you want to pursue, and plan accordingly.