When people ask if past life regression is real, I generally respond with "How do you define real?" Afterall, there are many intelligent people who now posit that we may be living in a virtual reality. You may have powerful experiences when you are dreaming, but then you wake up and say, "Oh, that was just a dream. It wasn't real." But who's to say that when your body dies, you don't awaken into an expanded consciousness state and say the same thing?
We often consider consensus reality to define what's real. If science has proven it, if other people can validate it or if enough people all agree upon it, then we consider it to be real. But remember, consensus reality once agreed that the Earth is flat, that it's impossible to fly or talk to someone across the planet or many other things. Science, technology and consensus reality evolve over time.
You have an inner reality that others often aren't privy to - the world of your feelings, thoughts and inner senses. Only you have direct access to this world, so others can't validate it for you. This inner world can be reached through many means, including meditation, energy work and hypnosis. You explore this inner world to discover your own inner truth.
Past life regression is a method for exploring your own inner truth. Rather than focusing on whether or not past life regression is real, instead I suggest you ask, "Is past life regression useful? Can it help me in some way?" Isn't that the true benchmark for how we choose to spend our time, energy and money?
Past life regression can give you insight into the greater you by helping you understand the dynamics of your relationships, release unhealthy patterns, discover hidden gifts and talents, gain new perspectives. What could be more real than that?