Originally posted by eldowardo
Alpha Centauri is a special star - not only because it is the closest stellar system to the sun but also because it is one of the relatively few
places in the Milky Way Galaxy that may offer terrestrial life conditions. If humanity looks for intelligent life elsewhere, then Alpha Centauri is an
excellent candidate.
homepage.sunrise.ch...
This provides some info on your question.

Offcourse, it is the closest star in our system and by coincidence it is also the star which can bear lifesupport. All stars are about the same, the
planets are the ones on which live can evolve, and we do barely know anything about the 100 billion stars in our milky way, to not speak about the
planets themselves.
Sirius is the best place too look for live (Virgo, Orion, Ursa Minor and Ursa mayor also) you have 3 billion people and hundreds of thousands of
writings to confirm that.