Are Demons really the bad ones?

[Wiclas]

Hey all! I was wondering, that are Demons as evil as they have been represent? I mean, there are legends, where people summon demons to do what they want them to do. Usually people captured them e.g using solomon's techniques, but some people say, that they like to work for humans. So as long as you respect them, they will help you if you do not push them too much, and capturing is just a waiste of time.

So are Demons really evil, if you can ask them a favor and they do it? What makes them that evil? They do not look that handsome and they comes form hell, but I used to look one Demonic symbol, and I had a best day in months. Could that be, that I had some connections in some level with him, and he showed me how to create a better world for myself? In some unconscious level? Well, it could just be just a coincidence.

Do you think that Demons are evil, or just other kinds of "Angels", that can be asked to do something for you?