I work in Power Engineering, and with my computers' sparetime, I dedicate it to working with Seti@Home.
Thoughts about SETI and SETI@home
With all the exoplanets found lately, and now even the Buildingblocks of life found on comets, the chances for life existing elsewhere has never been higher!
If intelligent extra-terrestrial life exists, I am pretty sure they haven't visited our planet yet.
Once we get the technology to send spacecrafts to other planets, I certainly hope that we can behave civilized and not just try to colonize the planets with no regards to anything else than profits!