Do the Zeta Reticulian/Grey Aliens exist in your opinion?

Update: This hypothetical question in no way am I sugesthing we are being visited by them or any other extraterrestrial species/race
Update 2: Any beings that come 39 light years and crash thier ship in 1947 in Roswell New Mexico desert got more then they bargin for when ran into Earthling slol.
Update 3: Zeta Reticuli a twin biary star system located in the constellation reticulium it can only be seen in the southren hemisphere.
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