u/Ok_Preparation_9062

I have owned my house for a couple years now and since i purchased it i have never had floor insulation in the crawspace, my crawspace is completely blocked around but once get in obviously it’s just the exposed subfloor above you. So would it make sense to put insulation under the floor and would it make a difference in the wintertime. I live in WVA and it gets pretty cold at times and i just wanted to see if it is justifiable to buy the insulation and put it in.