I hear you. I can get awfully obsessive about mileage and speed when I ride my road bike, thus making myself miserable. This is why I never use a computer on my bike, I would just drive my self nuts obsessing during a ride.

In reality, my favorite bike is a cruiser I have set up into a quasi klunker. It can do it all, street, trails, groceries, ect. It has a super high smile ratio too, that is, when ever I ride it, I have a big dumb smile. That is the way you are supposed to look on your bike right? When I am on the road I see few roadies with big dumb smiles, maybe they should try a klunker like mine.

Anyway, I am glad you found what works for you. It really is about the time you spend in the saddle being happy.