Well,i like to believe there is a God.I was raised as a roman catholic,so it's just in my nature...Sure i have questioned it many,many times.But i just got to the conclusion that it's something i'll never know for sure,so i might as well be on His good side in case He's real!:P
I have done many of those dumb things,like ouija and trying to invoque spirits and stuff when i was young.A lot of stuff happened without explanation.But there's just no point in doing this.I mean,think about it.If you don't believe in God,then there's no point in doing it,because youre always gona find a more "logical" explanation for anything that happened.And if you do believe in God,then you will know that what you are doping is forbidden by Him in the bible.So you're commiting a sin,and youre beeing fooled and toyed with by demons,or you're just talking to a spirit that is more confused than you.I have researched alot about this matter when i was younger,now i just decided to let things be.I'm not saying that i believe in it,and im not saying i don't.I just like to studie any possibility.It's not being dumb,its being curious.Dumb is if you blindly hold on to an opinion and don't want to consider anything else being possible.This goes for both sides of the story.
LoS,just keep in mind that it if it is true that there are demons,what you are doing is a very dangerous game you're playing.
One thing that made me want to know more about the occult whas that when i was young,like until i was about 13/14,then it started to go away(it still happens sometimes,just very rarley),i had something very similar to one of your "demon descriptions".
OK,so i lay in bed,and i could swear that i'm still awake(again,the doubt:maybe i'm already sleeping,and it just seems that i am awake)
I start to hear a sound in my head like tiiiiIIIIIIIIIIIIII.It got loud,and i couldn't move because it was like this strong wind would come out of nowhere,and i tried to talk,but i could only gasp(like i would call for help and my voice would be really low and broken).And then i would feel the "punches" like you said.But it was very weird,because i could feel something hitting me,but it didn't hurt.I always got very scared of this,and i still hate when sometimes it happens.Now i dont feel the wind anymore or nothing,but it just the eerie feeling,and the not being able to move or talk.
My mom took me to the doctor once,just to do a regular checkup(not because she believed in me),but she did ask him about that,cuz i was always telling her that.The doctor said it was that i had to much of an imagination,and needed to be more active during the day so i could feel tired at night and stoped imaging things and go to sleep.Maybe he was right!
When i was that young i was completly devoted to Christ,i would even yell at him if something happened that i didn't like.About 13/14 yrs old,i started to question him,and looking for other options,and around this same time,these nightmares slowed down...Again,i don't know what this is.I'm no tsaying it's ghosts,but i give it a possibility.Maybe it is just a strong imagination...the human brain is very powerfull,no one knows its limits yet.
Wow,that was pretty long,i doubt anyone will read this whole thing!!
Anyway,i just think we have to consider all and every possibility,and never think that our opinion is the final answer.In any case,LoS,i dont think you should be playing with that stuff.Because if it is real,its not a good thing...