I saw a demon at age 9 and have put myself in the condition to never want to see one ever again. It was an awful experience that I don't like to talk about. A couple of my family members experienced the same evil that was present at my grandparents house all those years ago. It got in through my uncle, who has always been an angry person after experiencing evil done to him, outside of the house. He was listening to satanic rock and welcoming that in.
When my grandpa died, they sold the house, and the new resident asked my mother if anything bad happened there, because that evil was still present.
I st times have felt presences, but always pray and praise Jesus when I do.
Demons are cast away with His name.