The option of going to visit another planet is certainly something I would consider, although only if I could take loved ones with me. The inherent risks of travelling to say Mars and back could take 3 years or more, and that would depend on the crafts ability to land on Mars, get off again, and manage to travel to/land on earth again. Orbital complications (using free trajectory, rather than loadsafuel) could mean that if you miss the chance of landing on Mars once, you would have to wait quite some time to get the chance to try again, similarly you face the same problems when returning (if so desired) to Earth. Henceforth, for the amount of intergalactic travel time required, I would probably prefer to stay on terra firma with my wife and family. If it was a trip to the Moon, then I would go without hesitation, but I would still like to experience that with loved ones, as that is about two weeks for a round trip. I would personally be contented with a trip upwards of about 18,000 miles so that I could just look upon and marvel at the 'blue marble'.
Either way, my religious beliefs would be largely unaffected, although no doubt the experience would be awe-inspiring and humbling. Most astronauts who have experienced this commen on the fragility and vulnerability of the earth (and its inhabitants)in the greater scheme of things.