- Internet access (and better telecommunications in general) means you're competing with the whole world. Every day you see many people who are more successful than you, which lowers your perception of your own social status. Testosterone is believed to increase status-seeking behavior. If such behavior persistently fails, maybe testosterone production is reduced to avoid pointless risk.
I find it much harder to motivate myself to produce anything than I did 10 years ago. I might just be older, but I do think that content dilution has something to do with it as well. How do you free yourself from that?
Something I realized recently - and admittedly this hasn't changed any behaviors for me yet, but maybe it will help you - is that a lot of the music I listen to is objectively not the best in the world in terms of technical skill, originality, popularity, etc. and yet I enjoy and appreciate it anyway. So maybe it's OK for me to make music that's also not the best in the world - someone might find it and like it anyway. And if not, no harm!
But we have kind of inadvertently let the internet shape our lives. There is nothing stopping us from living like it is the 80s + using the internet only where it makes our lives actually better.