TL;DR Check the summary on the bottom.

The Fermi Paradox assumes we and other aliens species have a interest in making contact with other species. Why is it that everyone makes assumptions like this and claim theories like this is valid? I get the whole mathematical deal with it. However, Fermi Paradox assumes we're traveling with nuclear driven spacecraft(granted we get that far). Fermi Paradox also assumes that if a species get that far, we would knew it by now. Why? Why would we know it by now? Do you really think a highly advanced species would just walk along doing their business ignoring another species with space travel and space exploration? If we're going to assume 'they' have any type of primitive instincts left then wouldn't it be obvious 'they' would want to observe us? A snapshot of our history isn't really the best representation of a species you would want to sing kumbaya with. Any theory involving assumptions of their agenda is flawed. Period.

On top of that, our radio signals are probably extremely primitive. They're not even that old to us, imagine how primitive they seem to a advanced race.

Fermi Paradox also assumes that if a species get that far, we would knew it by now.

We have no other means to make contact other by radio signals and exploration. We have seen just as much of the universe as a glass of water compared to the whole ocean on earth. Do you know how much water that is?. We have traveled with probes and manned ships the distance of one sand corn compared to the ocean. If I were to look out my window, I can probably see just as much as a glass of water compared to the ocean and I can't see shit. Not a single human. Even though humans are of an abundance here on earth. Why is it that people jump to the conclusion that we're alone just because we can't see anything. We're not even expected to see shit in outer space, we're extremely primitive. Not a little bit, our technology is literally a few generations old at max. If we were to evolve another 100 years, we would double the time that our technology has existed. DOUBLE. That's 100 years. 100 Years is a fraction of a fraction of any comparable point of time you can imagine. Tell me again how they can "probably read our radio signals". We have a better chance making huge texts with rocks on the face of earth and it'll be seen.

Lets face the fact that we're the problem. We are the danger in making contact. People seem to think that they would just jump of joy landing their spaceship here. We had nuclear weapons pointed at each other 30 years ago for mere disagreements. We have and are slaughtering people living in the most harsh conditions on this planet. We bombard first and ask questions later. We're a horribly egocentric war mongering race. It's not either as if you could make an agreement because our moral is completely all over. Some people have extremely high, some have close to none. We're just the perfect mix of fucked up society. We're a perfect machine to destroy everything in our path, granted that the elite on this planet is fueled by a big population watching their TVs, playing their iPads and getting fat doing nothing. Imagine you moved in to a house and you got a notice saying that a sociopath moved in down the block and he's psychologically deranged and has the means to blow your house to pieces. Hint We're the psychologically deranged neighbor.

Summary; In my beliefs and opinions, Fermi Paradox is flawed because it uses assumptions of both our race and other races that doesn't necessarily represent a well thought theory. We are extremely young. Our technology are extremely primitive, how much you love your new touchscreen on your phone, it is still primitive. I am more convinced 'they' would rather observe than to make contact instantaneously(As the Fermi Paradox assumes they would) because of our nature of war mongering, slaughtering of our own race and general power struggle with the elite.

I'm sorry for the long rant and long text but thanks for reading. If you have any points or want to point out other things I might not have thought of, please don't hesitate to reply.