@Lisa1831 I kind of doubt that even for those hosts who don't rely on it as a full-time job that we think of it as a "hobby". Nor are hobbies something that people necessarily put "minimum effort" into.
For me, it's not my primary source of income, I don't take back-to-back bookings, and it's pretty seasonal (not my doing, just the nature of my area). But each of the guests I prepare for and interact with I do exactly the same as I would if it was a full time job. In fact, my guests may receive more attention than those who book places with high turnover-I have more time to thoroughly clean, and send guests personalized messages, not just saved, generic info.