Comet Enthusiast

Extraterrestrial life is the most interesting thing ever, bar nothing, and if you disagree you're either a terribly limited person or misread the start of the sentence.  We're incredibly lucky to even exist, and on top of that we have two possible life-locations right here on our solar system doorstep - but we have to choose which to check.  We want to go everywhere, but with a price-tag of billions of dollars per outer-planet probe we have to decide and flipping a coin just won't cut it.