It's a worthy habit. The existence of angels brings the theoretical considerations of this article into perspective.
Angels are purely spiritual created beings not dependent on the physical universe. Some theologians - going back a long time ago - have speculated that there are an indefinite number of angels, each of whose nature shines forth the infinite majesty of God's uncreated Glory and Nature ever more perfectly. Each angel is a whole unique universe unto itself.
In this perspective these philosophers and theologians have been ahead of current empirical scientific trends in terms of looking for life outside our planet.