Nothing wrong with your children sleeping nude. I was in a similar situation with you, except my wife passed away. when my daughter around 10, we did not have much money because at the time i did not have a good job. we had fan going in most of the rooms but that can only do so much. she complained a lot about the heat and i always tried to come up with ways to help her like getting her a fan in her room or having a glass of ice water next to her bed. well when i finally ran out of ideas i thought i might as well suggest something new. so when i was getting her ready for bed i told her of a new idea to help her fight the heat. i asked her if she would like to sleep in nothing but her
panties. it does work since i sleep in nothing but boxers. she was really desperite for ideas to fight the heat so she went along with it. well later that night i went in to check on her and i saw that i gave her a good idea because she even had her
panties on the floor next to her bed. I figured she really liked sleeping nude because she even sleeps that way when it is cold out. I just put extra blackets on her bed. it was a little akward when she came to sleep in my bed though, but she is my daughter and i am not a pervert so i just got used to it. she is now 15 and I can afford AC and she still sleeps like that. we are really comfortable with nudity around each other now. we have no problem walking around nude in front of eachother. in fact, before we go to bed we like to watch leno. seince we go to bed after that we just dress for bed. but for me that is my boxers and for her it is her birthday suit. there is nothing wrong with letting your child sleep nude. like my daughter your kids might like it.