Alien life forms ? wiping memory ?

This may sound a little crazy but its not really to crazy. So earth is a planet revolving around the sun (a star) and there are millions of stars in this one galaxy. There are million of stars similar to our sun in millions of other galaxy's and that means billions of similar starts. there is a 1in 100000000 chance of life starting on a planet and billions of planets so chances are there is life on other planets intellectual life forms for all we no. aliens what if they can wipe memory ? lets say i got abducted and ex amend for study in my sleep and i was screamy bloody murder the whole time they were examing me. they wipe my memory put me to sleep and i continue with my everyday life the next morning tell me this is possible ? it gets me thinking really hard on intellectual life every time what do u guys think ? plz answer nicely if dont have any curiosity of other life then it would be a waste of time any ways:P