I don't.
I believe that aquascaping - invariably tied to CO2 injection - is just a fashion. I hope it will pass and people will focus on health & functionality again.
You kinda misinterpret the relatively modern term "aquascaping" and we (can) do it without CO², the scapping part is like Landscapping like you could do in the garden but we do it in a smaller glass box. Creating a diorama and the word means "Dia - Over or Through or Across" and "Horama - The View" and is an art form of 3-dimensional modelling. It's about placing hardscape in such a way that it looks natural and pleasing to the eye. This follows a set of rules same as landscape painters and photographers do with taking notice of foreground, background, focal points and colours and not trying to mess this up.
I've been in the hobby of aquarium keeping since 1973 back in the day, it wasn't called aquascaping and I have no idea when the term was invented and who did it. I never read beauty magazines because they only make you feel ugly. The term may have come this way to the aquarium community I don't know. According to the old books you simply had a Dutch-style aquarium or a Natural-style biotope aquarium that could be anything. The first time I read this new term was when I visited aquarium communities on the internet. Anyway, a Dutch-style aquarium also is a typical way of scaping and placing hardscapes but mainly plants in a certain fashion to create a specific look thus also an aquascaping style.
The CO² injection is a different story, that's more about being able to grow bog plants sp. submerged that are not able to grow this way without it. This also can create looks that previously couldn't be achieved. But if you choose easy plants that don't require CO² nothing is holding you back from following the same set of rules and shape | Scape it.
This is a completely different approach than something like just throwing in a bucket of sand and a few rocks in the tank shaking it 3 times and done... That's what most aquariums in the past looked like. Then it's still an aquarium but hardly an aquascape. But in the end, it still can be healthy and it's all about yourself and your liking. We can't argue about taste.
Why do I do it? Similar to
@Tim Harrison story it always gave me peace of mind it's therapeutic and a form of meditation and learned a lot from the new animistic approach called aquascapping by considering things I didn't see before to make it more 3 dimensional and naturally looking than it ever did.
🙂 So the beauty magazine still got me there but then by internet...