Schizophrenics hallucinate alternate realities. People who claim to have been abducted by aliens are accused of having Fantasy Prone Personalities. So what about those of us who claim to be conversing with angels, fairies, and spirit guides? Are we nuts? Absolutely yes! If we weren't crazy before we started chatting with divine, we soon will be. Just constant questioning of one's sanity can drive a person insane. How do you know if you're really talking to spirits or if you're losing your mind?
Let me start by saying that until little creatures begin showing themselves as real and 3D touchable as any other critter on earth and do it on a massive worldwide scale so that they're able to be counted and kept track of like anyone else on endangered species list, then you won't ever really know for sure will you? So why don't they? Well that's one of those million dollar questions. As far as I can tell it's a combination of them not actually existing in a physical sense beyond spiritual realm and that they get a certain amount of pleasure in teasing and playfully messing with our minds.
I don't know what official stance is according to Grand PooBah of Psychiatry, but I know that most people who are certifiably insane don't know that they are. The saying goes that if you are capable of questioning your own sanity, then you must not be too far gone yet. Not very reassuring, I know. Are they real or not? That's question you're asking. I could give you one of those psychobabble answers like, "They are as real as you believe them to be." Again, that doesn't really help much.
Here's first question to ask yourself. Do they control you? The reason I ask is because throughout history there have been stories in all religions and cultures of some type of spirits that come to lovingly guide us along our way. So are spirits controlling you and your life or are they guiding and nudging you? If they're pushy and controlling you then there's a higher probability that it's a psychological game you're playing with yourself. "The devil made me do it." That usually means that you don't want to face your secret motivations and so you have created an entity to force you to do things.
If they don't control you and are simply loving guides trying to help out, then do you control them? If you are able to tell them what to do and they are working around clock at your beck and call, then chances are you're making them up. Free will is at core of love. Nobody is forced to do anything. If you're able to control when they come and go and what they do or do not do to help you, then you aren't working with separate entities. Angels, fairies, and spirit guides are not our cosmic slaves to be controlled and dictated to. If you can do that, then they aren't real.