Crazy story.. but given the current situation, I do have to admit that my personal imagination for what really is going on comes to a hold directly before reptilians are mentioned. The rest, well, it sort of looks like it may be true. Even if there's only a 1: 1 billion chance for that, the implications are so vast that it makes sense to give it some serious considerations.

In regard of these reptilians, I tend to use Ockhams razor: What do they need earth for? What do they need slaves for? If you are so far developed, you have more than enough energy to create whatever you want - and among other things, you could create a slave race who actually loves serving them. A bit like the Dominion in Star Trek.