If you have a mortgage or rent a home alone..maybe different if you're mortgage-free or perhaps only renting a room or something.
You have to make sure you can afford everything each month. If anything breaks/needs repairing, you foot 100% of the bill. All renovations are paid for solely by you.
You have to make sure you have money aside for various things.
Living alone has many advantages, but financially it's tough and I'm not sure I can do it for much longer. It's stressful unless you have a lot of savings I think.