I'd ask an experienced local realtor for their opinion. If you're planning on staying there for 10 years and don't need the space now, you have time to make that decision.

If money burning a hole in your pocket you can finish the basement and pay taxes and have 1000 SF of space collecting dust if you not going to use and more space to clean.

If you into exercising you can make a gym down there and make a nice area without finishing the basement.

If not and looking for a re-sale value, a few years before you put it on the market, finish it and you will get your money back and make a little profit.

Good luck.

I find unfinished basements create dust and a feeling that the house is not quite finished. I like a basement if you have kids for a games room, a hang out spot away from the main part of the house for them and for you.

If you really have no need for the added space then I would be in no rush to finish it. In most markets finished basements are in the lower return on your investment dollars. Also to realize a decent return the finished basement must be properly designed and finished, just slapping up some drywall won't do it. The finished basement needs to feel as if it is just another living level of the main home, not a basement.

Two houses ago we had a similar scenerio. We used the space for a small amount of storage but that was it. I disliked the dust from the concrete so we coated the entire floor with an epoxy product. We don't remember the brand but it was easy to do. Take everything out, a good cleaning, application. Made a huge difference and the people that bought our house when we sold it loved that it would be easy to look after. I believe a lot of the newer products come in interesting colors. Then if you ever to decide to do more to the space you can just build over it.