Is a Suburban heater really a bad idea for low use?

[Detroit80]

Going through the rebuild on my van, and in that deciding what to keep or replace stage. I keep seeing references to the Suburban heaters being garbage, and to replace them with something like the Webasto units.

Is it just an efficiency or convience thing? Or is there some safety issue I'm not aware of?

I live and play largely in the southwest desert. I can't even remember the last time I turned on the heater in the house, and you couldn't pay me to go camping in sub freezing weather. I've often joked that I turn in to a whiny little girl real fast if the temp drops below 65F, and I'm in physical pain in anything below about 45F. I won't intentionally go camping somewhere that I know will be cold like that as I won't leave the heated camper anyways.

That said, I was planning on reinstalling the Suburban heater as a just in case thing...like say I take a trip through the mountains, and get stuck somewhere unplanned. But I'll probably never fire up this heater outside of occasionally testing it.