I like to learn different points of view and new things. I can share my experience of what's worked for me and also met some new friends. Picked up lots of info on benefits of phono stages, importance of speaker placement and room acoustics and isolation/vibration control which have helped my system tremendously.
Also learned about some overpriced tweaks that some huge spenders will try because they represent a ridiculously low % of their audio investment and any infinitesimal improvement (audible or not) is worth a lot to them. Not to start a war but things like fuses, HFTs, coatings, etc. Love hearing cable debates - hysterical. Of course they impact sound, but how much will you spend for how much improvement? I never doubt when someone thinks something improves the sound for them. If they think it does in their mind, then it does FOR THEM. The absolute measurement guys are funny too. Just because you can measure it doesn't mean you can hear, appreciate, and value it.