Please understand that what us older magicians are trying to get across to folks here is not based on fear, but experience. Big difference.
Unless you’ve physically SEEN and directly spoken to a spirit who appeared in the triangle, unless you’ve heard the thunderous explosions that often come with the ripping opening of the portal, unless you’ve experienced the fact that you need more than a single banishing to get rid of them, etc. (and I don’t mean in your imagination), then you still don’t understand the types of forces you’re dealing with. It is their very beings that are of a chaotic nature, and can be extremely dangerous to the untrained (or to those unwilling to admit they’re untrained).
Again, this is not about fear, but about common sense. These are INFERNAL SPIRITS. No, they’re not usually “out to get you,” but the negative polarity of magic, the very real possibility of annihilation that’s part and parcel of infernal magick (which can be avoided) is a simple consequence of successful evocation to physical manifestation. I’ve personally lost two fellow magicians over the years who WERE successful at it, but who didn’t recognize the totality of the Art.
Many folks here seem to consider imagination and scrying to be the same as evocation. It is not. It may work for the purposes that most people here seem to have, but if you’re talking evocation to physical manifestation, I have yet to meet more than two or three here who have actually accomplished it.