Although my main interests are around computers and games, I have bought myself relatively nice cameras from time to time, but always within a certain budget. DSLR cameras can run to 1000s of pounds. As someone adroitly put it; "You're not buying a camera with interchangeable lenses, you're buying into a lens ecosystem that has interchangeable cameras".
0 I bought a Sony A350 in around 2010, and a budget tele lens a year later. The first thing I wanted to do was try to take lots of "artistic" shots of architecture. I'm a scientist at heart, with a love of computing and engineering. The beautiful lines and curves made by architects to create spaces for us to exist in can be some of the most aesthetically pleasing objects to photograph.
Sadly the A350 really was quite a disappointment. It suffered from "front-focusing", and a very iffy auto-focus. All my attempts to capture nice clean lines with sharp colours failed with that camera.
My other main beef with the A350 was that the lenses had nasty chromatic aberration near the edges. It was only really evident in post-processing, but everything had a blue outline due to the lens properties being a bit crap.
So, when faced with the choice of "investing further in the Sony lens system", I bailed, and I've barely used the DSLR since 2016/2017, instead preferring to use the mobile for taking photos of structures.