I suspect that a lot of us do both serious photography in which we haul out our best equipment, ofter with heavy back packs and tripods, but sometimes feel like shooting for fun, with a smaller camera, and heaven forbid, we might not even use a tripod at all.
I tend to feel a bit guilty when I do this, feeling that I should be using the time to photograph seriously. It raises some questions though (don't most of the things I write about, huh?).
Is it useful or distracting to do 'fun' photography when you think of yourself a serious photographer?
Does using novice equipment and techniques mean you are going to get poor results?
What do you do with any images you obtain?
Truth is, tripods are a hassle and slow you down and sometimes even limit your position. It may be that shooting landscapes with everything in focus (ie. small f stops and slow shutter speeds) isn't compatible with no tripod, so one has to change one's standards or styles of shooting or even subject matter. Consider some of the lovely work done with Holga cameras which is a perfect example of a serious photographer using a fun camera to take artistically worthwhile photographs.
It may be that with your 'fun' equipment you can't make 20X20 prints but there are photographers with 8X10 view cameras who do nothing but contact print so while not having huge prints of these images to sell might hurt the pocket book, it shouldn't in fact pose any problems in being artistic, creative and producing serious work while actually having fun.
If on the other hand, one tries do do something for which the equipment is totally unsuited out of laziness, then we might have to question our motives, values and drive. Though even here, there are some famous European photographs known for their black and white landscape work shot on 35 mm. and without tripod - parts of the image are out of focus, all of the image is grainy, yet they still get hung in galleries because their work is creative and uses the equipment to advantage.
Perhaps the problem occurs when we pretend we have an 8X10 view camera but actually shoot with 35 mm. Maybe we should be thinking along different lines, or using an 8X10.
With lightweight fun to use equipment, we are more likely to explore our creative boundaries so one could very easily argue that playing around is good for us, that it broadens our horizons and might actually improve our serious work.