As someone who has visited many, many homes over the years, I have to say that most people would be very pleasantly surprised if they went for a visit. Newer homes look more like a hotel or a cruise ship on land than an institution. Many have 'chef-prepared' meals and varied menus. Some have swimming pools and spas on site. Most have gyms and a full activity calendar. The healthier a person is when the enter, the more there will be to do. Even older homes have a lot to offer as many have renovated to keep up with the changes in the industry. While cost might be a factor for some, for those who have an existing property that they can sell, they may find the cost involved is equal to or less than what they were paying to live in their own homes, especially if they had services and assistance coming into the home.
My advice to everyone considering relocation is to visit a few retirement homes to see what they have to offer. If your health is a bit of an issue you may be best to explore options while you are still able - waiting until a crisis may limit your choices and create a situation where you only have the option of long-term care. We find that with many people, going into a retirement home when they are still relatively healthy, keeps them healthy longer and for many, allows them to avoid long-term care entirely.
Many retirement homes have events open to the public where you can see a bit of the home as well. If you want to see more, they will all be pleased to take you for a tour. If you think it might be a place you want to live in, ask about a trial stay for a few days to see what it's really like in a retirement home - you might be quite pleasantly surprised!