We have a fireplace. Like the OP, it’s more for fun than heat. We definitely do not use it every day, but we use it a lot more than two or three times per year.
My wife is in the same camp as all of those in this thread who say that the charm wears off quickly. I’m not. I love it. It doesn’t seem like a chore to me, though I can understand why cutting/splitting wood and cleaning out ash would feel like a chore to many. As long as I take care of the ashes and build and maintain the fire, my wife does like it. She enjoys the fires, she just doesn’t like doing any of the work involved.
My firewood comes from trees I have cut down. Usually by the time I start running low on firewood one of my friends needs a tree taken down. I’ve been in this house for 20 years and haven’t had to pay for firewood yet. Buying firewood is certainly an option though. You can store it under a tarp, just make sure not to store your wood in a place where water collects or along a path of rain runoff.
Make sure that your fireplace can handle a hot fire. I lived in one house where if you really got a hot fire going, the wall in the room behind it would start to get too hot. You could only burn small fires or artificial fire logs in that one. A relative of ours has the same issue with his fireplace. My fireplace can handle as hot of a fire as you are willing to stand.
If you use your fireplace a lot, you’ll need to get the chimney cleaned every year. For just occasional use, you can probably go every two or three years with cleaning. What type of wood you burn makes a difference. Cheap pine in particular will leave a lot more creosote in your chimney than woods like maple or oak.
Definitely make sure you get your chimney cleaned regularly though. Chimney fires are no joke.
As mentioned already, if your fireplace doesn’t have doors, get doors. We also have a chain screen in ours, which is nice.
You will need a good set of fireplace tools. You need a poker, tongs, and a shovel. Most sets come with a brush as well, which is nice. Don’t skimp and get cheapie tools. You are also going to want a metal bucket for the ash. We use a fairly small bucket, but we empty it out between every fire.
You are going to need a grate to hold the wood. Don’t just sit the wood on the floor of the fireplace. You probably know that already but I don’t know your experience with fires.
Having something to hold the wood is a good idea too. We have a small log holder next to the fireplace. In the winter we will also bring wood from our wood pile into the breezeway next to the garage so that any frost or snow on the wood will melt off and the wood will be nice and dry. So the wood goes wood pile -> breezeway -> log holder by fireplace -> into the fire. Even under a tarp you can get some snow and ice buildup on your wood. The wood in our wood pile is also not split, so I split it once it is in the breezeway.
I have a lot of experience starting fires with just twigs and small branches, but you can also use fire starter sticks if you want to be quick and lazy about it. I know someone who uses artificial fire logs as a fire starter, but that’s really lazy IMHO.
I know it’s been said but it’s worth repeating. NO PAPER IN THE FIREPLACE unless you really want to burn your house down.
Make sure the wood is nicely seasoned (had a lot of time to dry out) before burning it. If you are buying firewood, it will probably already be fairly well seasoned. You don’t want to burn green wood. It does not burn well.
When the fire burns down low, we will close the doors and go to bed. Never leave the doors open and the fire unattended.
I’m also firmly in the camp that believes gas and electric fireplaces suck. Stick to real wood.