I've seen enough via research to believe they are real. Interesting factoid: one MUFON investigator reported that every single abductee who called on the name of Jesus during the abduction reported it immediately ending. Others have become involved in ministering to abductees and use methods similar to what you would use with someone involved in occult. Other research suggests most abductions happen to people who have been involved in the occult in some fashion.

I believe aliens are probably nephilim, perhaps animated by demonic spirits.

That said, I also believe most UFO sightings are actually military tech...