I don’t think for a second that aliens will be coming to our home planet anytime soon. They aren’t even interested in coming. They have other things to occupy themselves. It’s true that they have underwater bases here on Earth, but they want for us to relax in our home planet. They are fine not meeting us, and so are we. Most of us speculate many things about aliens. I think it is time to leave the aliens alone. They just want for us to have fun and be busy with our lives. It’s a safe bet that they only wanted to make our civilization, but that’s about it. They have other things to worry about.