I lost my motivation to exercise a few years ago. My body type is "skinny/decent" without exercise and I can generally eat whatever I want with little consequen

I lost my motivation to exercise a few years ago. My body type is "skinny/decent" without exercise and I can generally eat whatever I want with little consequences. That said, I don't really eat a lot. I only eat when I'm hungry. I would say I'm of average fitness currently. I used to be in amazing shape, 6pack, big muscles, big chest, perfect legs, etc. My goal was motivated to get the most attention I possibly could and to show my body off. I achieved it, and got a lot of attention. My life revolved around going to the gym every day, having a personal trainer, drinking tons of protein shakes, eating "healthy", and reading muscle/workout blogs. At night I would go out to the club and dance, usually with my shirt off, and on the weekends I went to circuit parties. I hung out with only pretty people, and used my body at work to get what I wanted. I had plenty of one night stands, and enjoyed flirting with people and making others jealous. I reveled in my own beauty and self-confidence. At some point, it all just got really boring. I realized that the attention I was getting was because of my body, and not because of "me". Sex became a routine, there was no longer a thrill of trying to land someone hot when you've already had hot so many times. I felt like a machine. In the end, I was no longer willing to sacrifice hours of my life each day in a gym for my own vanity and for that of others. I realized the club/circuit scene is actually for losers (albeit pretty ones). And most important I realized that getting in shape and looking pretty isn't that hard if you just go to the gym, and it certainly doesn't make you unique. I would like to come back to a healthy balance, because I did enjoy working out. I just fear if I go back to it, it will take over my life again and ruin the introverted time I now spend reading, on my side projects, etc.