Worthwhile, yes; enjoy, somewhat; not my thing in the end, also true. I left the program after 2 years of research because you can get very forced into a niche

Worthwhile, yes; enjoy, somewhat; not my thing in the end, also true. I left the program after 2 years of research because you can get very forced into a niche to satisfy supervisors' and the academic world's requirements. I wanted to do something vaguely real-worldy, and had to leave the bubble of academia to do so. I don't regret starting the PhD or leaving it though.