Recently, I discovered a few things about "The Seti Program" that might discourage aliens from contacting us. Please read below:

"In order to celebrate the 50th anniversary of SETI (Search for Extra-Terrestrial Intelligence), England’s Telegraph newspaper asked readers to submit what they would like to communicate to aliens before the visit Earth. Expecting wonderful, uplifting notes extolling our virtues as humans, the Telegraph was shocked to discover the opposite, with the overwhelming majority asking for aliens to please put us out of our misery".

1. For what would he learn about mankind? First, that we are vicious,  creatures who have already done a great job of wrecking our home. “Please kill us now … have no mercy,” urged a gentleman from Indiana. “We are evil and you must defend yourself.”

2. “Keep away from this planet,” agreed Pamela from Sicily. “Mankind is only intent on depleting, abusing and destroying [it]. They will do the same to yours should they find it. Mankind is the worst virus in the universe. You have been warned.”

3. Nick from Calne was equally blunt: “If you manage to work out how to travel to us, don’t bother, as we’ll probably probe you, try to blow you up or worse still, steal your technology and invade… Have a nice day.”

4. Rob from Georgia, meanwhile, was prepared to throw the rest of mankind to the lions: “Dearest Aliens, If you choose to conquer Earth, please do not kill or enslave those of us who can name all 12 men to have walked on the Moon. We are the ones worth keeping around.”

5. Seema from Elgin had a compelling reason for ET not to bother with us: “If you’re planning to visit our planet, please know you will need to remove all metal from your person, take your shoes off and submit to a full body scan, carry all liquids/gels/aerosols in clear plastic bottles no bigger than 3.4oz, surrender all cigarette lighters and batteries, pack all jams and jellies (but pies can be carried on)… Oh, yes. Welcome to the Earth!”

There were also unsuccessful "First Contact Events" in the last 5,000 years which created most of the world's religions.

Putting it all together,  there's more reasons why aliens wouldn't contact us compared to reasons why they would.

It would be beneficial for mankind to access superior technology that would improve the environment of Earth and the health of individuals.

Personally, I feel that first contact will occur with individuals who can be trusted to use scientific knowledge properly like Tesla.