Why summon demons???

Oops... meant can

1. Knowledge

2. LOL if it's 'properly' summoned ( ritual, circle, protections in place) then it can do NOTHING

3. Yes of people who don't know what they are doing !

Okay, so thats probably the reason why Id be interested in them: knowledge.. But then, dont they just tell you all kinds of nonsense to confuse you?

I heard they can even give you nightmares when you sleep. And they also have a nasty habit of showing up uninvited.

"And they also have a nasty habit of showing up uninvited."

-for your information, its not the demons who are doing these kinds of stuffs.. its the lower level spirits (most probably the deceased persons who still have unfinished business here in the material world or the parasites of the astral realm).. come to think of this, why would such a lesser god shows up uninvited on the first place? well unless you're a special one..

;)

Most people summon demons for entertainment. It's possible to become physically and mentally hurt by demons. It is also possible to subjugate a demon however almost no one even attempts too.

Demons will only hurt you if YOU start it first from my experience.
I have evoked and successfully talked to several demons.
Some have taught me great things and some enlightened me on how to deal with everyday life.

it's true, demons can definitely help you.

The only problems I have had was when I accidentally stepped over some red tape with them, but that was easily fixed. If you do work with demons, I would recommend befriending a high ranking demon as a patron and using that relationship to help you understand them and work with them. If you show them respect, they usually will too.

If I were to summon demons it would be to gain more knowledge applicable to magic in order to gain power, and knowledge.

Based on my experiences, demons are actually truthful, and they never seem to have their side of the story told. See this all happened with a war between angels and demons. I personally met a demon and he was actually pretty cool. :) Once you get to know a demon your mind will change.