It occurred to me that there is no relationship between the need to do weekly water changes and being lazy. You can of course be lazy but still do weekly water changes; and you can of course not be lazy but not do weekly water changes.
Most laziness in the aquarium hobby is not in what we do. It's between the ears. It's in what we don't try to learn. We can be highly energetic people and not be able to maintain an aquarium very well, if we don't put a part of our brains onto the job of learning how to do things as best we can.
@f_luxus is a different kind of aquarist than I am. I have great respect for this poster's meticulous approach, as I begin to see how he or she works at their craft.
@f_luxus , you are more of a technical aquarist than I am. You have a small number of aquariums, elegantly crafted. I have a large number, some of which are unstable as I seek no balance in them. I count on water changing and time to transform them into what I want them to be.
I use no CO2, and no UV. I've used both in the past, and if I were to fall back to two or three showtanks, I would resurrect those systems. My major fascination is in learning how to breed uncommon fish, and how to keep fish new in the hobby. That has brought me around to an ever larger picture - once you begin to look at the natural history of the fish in question, then the environment that created it, and the long history of how it evolved to thrive in that environment becomes of great interest. My primary interest is the fish. The aquarium is a means to an end.
A lot of people who become involved in the hobby are aquarium first people - aquascapers and community tank keepers. I am trying to meet that approach halfway. Some of my fish come from fast water with no plants. In 12 days of fishing in Gabon, I didn't see enough aquatic plants to fill one single aquascaped 100 litre aquarium, and yet many of the fish I keep originate in that region. I plan to go to West Africa this winter to fish for killifish, Cichlids, Characins and small barbs, and I will learn a lot about each species and its habitat. Will I encounter heavy aquatic plant growth? I might, from what I've been reading. If I do, the fish I bring back will be in heavily planted tanks.
After Gabon, I've done a lot of 'work' on getting terrestrial plants to develop root systems along the backs of my tanks, as root systems in the water were where my fish were found. These aren't the prettiest tanks for visitors, but my fishroom isn't often visited by serious aquarists who would care about such things. My pleasure is in watching fish behaviour, so an attempt to make the artificial environment of the tank allow that is what I try for.
From reading people on this forum, I have spent more time on plants recently (the past 10 years or so). I regularly check my city's water analyses, taken from a pumping station up the road and posted every 3 months. They are very stable, and provide me with the information that lets me choose which tetras, killies, and Cichlids to try to breed. With aggressive water changing (I am surrounded by lakes and don't have any water shortages) I don't have to spend time on testing my tanks. I maintain them as the water comes from the tap. That's very different from how someone who needs an RO system to have similar water has to work.
I'll wager you look at your plants, and know their needs very well. I look at my cardinals in my showtank, and enjoy the fact that many were bred here. I see the need to set up another breeding tank to double the size of my shoal. That tank is sparsely populated. Alas, they live with African, North American and Asian aquatic plants, which might upset an aquarium first purist.