Because of DMT's short duration many people feel more comfortable with the intensity and effects. But the dosage levels should be worked up. Mushrooms also have a low rate of "bad trips" most bad trips seem to be from LSD as it is a very psychological compound and very different than other tryptamine and phenethylamines. Some of the 2c- are gentler as well. But any of these substances can cause a bad trip, it is the set and setting more so than any single compound. Take these compounds with respect, with a friend (the first few times), in a safe environment, with no commitments or obligations. Just relax and go with it.
Think of it as a wave in the ocean. You know when you go out there that you may get tossed around a bit, there is no point trying to panic and fight it, trying to find which way is up during the tumble, in the end you will always reach the surface and end up back on the shore.