Am I wrong?

Am I wrong for not allowing my kids to spend the night at family's house? It's not that I don't trust them it's just my preference. I don't mind taking them to visit anyday for whatever amount of hours but I have never let my kids stay anywhere. My family say they don't feel comfortable interacting with my kids because I dont let them take my boys..... my kids are 3 and 1 years old. Also let me add that my sister has let me watch her kids at my house over night but she feels some type of way that I won't let mine go any where overnight just visiting...