Yup, totally believe; which is not to say I believe anything anyone has to say about them at face value. And yeah, to the one who mentioned grains of sand:
Our galaxy (vita/milkyway) is a middling-large galaxy... it tracks between 200,000,000,000 stars and 400,000,000,000 stars (undecided at this time.) There are far larger... the nearby Andromeda Galaxy (which will collide with us in a couple billion years) has roughly double what we've got... and there are other mega galaxies out there easily topping 1,000,000,000,000 stars. Multiply this by the estimated number of galaxies, and what you've got is somewhere between 30,000,000,000,000,000,000,000 to 70,000,000,000,000,000,000,000 stars in just the observable universe alone. There's more that cannot be observed and the mathematical likelihood that there's uncountable other universes as well (replete with math that suggests it is not impossible to flip flop between them in varying ways.)
MEANWHILE, this one tiny little solarsystem has offered us more than one opportunity for life. Venus has pockets of gas in its atmosphere whose only EASY explanation thus far may be free-floating bacterial colonies. Not proven, not disproven... just very interesting. There's a group of nasa-related scientists hinting at a major public release of life information regarding mars within the next year as well... again, the best we can hope for is bacteria level stuff. There's certainly things alive on Earth right now that would do fine there. Further, three of Jupiter's gallilean moons offer subsurface possibilities as well.
There are many stars out there that are very awful candidates for life... for example, there was a spate of people claiming to have come in contact with aliens calling themselves Pleideans... referencing the newborns called the Pleides. Don't be suckered in... these stars are babies, and haven't had yet a third of the time it took for our own earth to get STARTED with the most basic of organic shinanigans. As well, they're rather large newborns, and the bigger the star, the more violent and shortlived it is. So not only would they NOT be a vacation spot for interstellar migrants, but they'll explode far too soon for life to ever get a chance. If someone says aliens come from a star with a popular and widely known name, you can disregard this because only the brightest of stars in our sky GOT popular names, and they are bright for several reasons most of which are very hostile to life.