What is the breaking point on that practice though? If you are going to be taking your rig out once a month, I assume leave it running, but if you are planning to store it for several months, is it better to go ahead and power it off and air it out?
I think it is an economy thing.... Takes time and enegery (Both electrical/gas and elbow type enegery) to clean it out and shut it down at the end of a trip, if you are going out again in just a few weeks,,,,, Easier to keep it cold and active. But if you are stroing it for the season (months) by all means shut it down and clean it out.
Just now I'm between seasons,, New season starts... Well, next week (for me) so all that's cold is the portable refrig/freezer, it's got a 5 pack of Diet RC in it (was a six but I drank one) nicely chilled.
I also got one of my radio antennas tuned up today (I'm a ham, finally got all the proper connectors and found the metere, 1.2 to one SWR or less in the desired area.. Good, it's a full wave on 70cm)