Yes. Stake your tent to keep it from sliding around and possibly causing rips and tears in the floor. Stakes also hold the tent down so that wind doesn't get beneath it and blow it across the campground. Tents are not meant to be sleds sliding down a hill nor kites flying in the wind. That's why they come with stake loops. Use them.

What kind of stake should you use?

If you have other tent questions, check out the tent FAQ.