I think seeking value in hobbies is a problem, they don't need to have any inherent value for the hobbyist other than being fun. I say it is a problem because it leads to a kind of mentality where one seeks productivity and optimization of RoI in all things in life. You are allowed to enjoy thing for no other reason than being fun. That being said, I agree with you, but I feel this kind of thinking could lead to see others who just want to enjoy a hobby as less than me, and that's where I draw the line.