Had pop eye arms 5-6 months ago, hobby changed, job changed, lifestyle changed. Can always change back. Word.
Man, you were acting like gym is your life. Working as personal trainer and all that shit. Like most of us haven't gone through that phase. Was never working in gym myself but dude who was training with us eventually got a job in there. His older brother was selling amphetamines to newbies while his younger bro was holding butt cheeks of pretty ladies
(they call it introduction to basic gym exercise routine).
You'll probably go back to being gym rat at some point between 20s and 30s, but know this, if you keep that through your 30s and 40s that means you've flipped off. There is not a single older gym rat without serious psychological issues, at least from my personal experience.
On the other hand, I take pride in being thin. In this age of gym rats and fitness freaks. Well at some point being thin will become trendy again, like it was in 70s. It is important not to be obese, not because it looks bad. Health reasons mainly.