Am I wasting time?

I feel like im wasting time everytime I decide to enjoy my hobby. It always feels like there's a way to do something better with it but I can never think of what it may be.

I work 60 hrs and go to the gym 6 days a week. I should be somewhat fulfilled with life my bills are being paid. So I shouldn't feel bad whenever I take that day off but when I do it feels like I'm just wasting time that could be used elsewhere.

(Edit: Hobbies include: Playing games, reading, writing, watching anime, and cooking.)